14 yo newbie here with a shopping list and some questions :))

[Craiga 01453]

First of all, GREAT JOB with your preparation!! You are putting in the due diligence that many people skip over and that is AWESOME!!! You are setting yourself up for success, my young friend!! You could teach a LOT of adults a few things already!!

Keep in mind I am sharing what I know, and what my experiences have taught me. I am not an expert, and it's always good to hear varying ideas with varied success and failure rates...
A few quick answers to your questions:

-The size of the snake will vary, but just for reference, when I got my BP in mid-January he was 20" and 128 grams. As of 2/24 he was 21+" and 188 grams.
-As far as feeder size, I believe you will be fine feeding the hoppers til your 10 run out, then switch to the appropriate size
-One water bowl is enough in your 10 gallon setup, it's up to you whether you add a second when you upgrade. I sometimes add a second during dry winter months to help keep humidity up
-Honestly, if you can afford to upgrade to PVC when it's time to upgrade to the snake's forever home it is worth it. Glass looks great, but temps/humidity can be a pain in the rear end. If you prefer glass, I think a 40 gallon breeder tank is perfect. I use 40 gal breeders now and am fine with them until I can eventually switch to PVC.
-In a 10 gallon, your UTH may be enough, depending on the ambient temp in the room the snake will be kept in. Day/night lights are not required. Your BP will prefer less light and feel more safe and secure without them.
-Wrapping 3 sides of the enclosure is a great idea!
-I spot clean every time I see any poop/urates or any time my snakes make a mess exploring, spilling water or whatever. The sooner the mess is cleaned, the better. Bacteria and mold can't build up if it's not there in the first place. I also do a thorough cleaning about once a month, which includes hides, water bowl (clean water daily/every other day while giving the water bowl a quick wash), decorations, glass, etc...
-As far as handling, I would wait til your snake gets 2 meals in him/her before doing much handling. Believe me, I know it's tempting to hold your new snake, but you have 20+ years to hang out with your snake, so let him/her adjust. After that, 3-4 times a week is plenty, especially while your snake is still young. BPs take very little handling to acclimate to humans when done properly. They are a very docile species who tolerate handling well, however, over-handling will often cause stress, which can lead to your snake going off food, etc...

Kira hit the nail on the head with the thermostat!!!

Anyway, hope I helped a bit.
Like I said, you are well on your way. Keep reading, keep asking questions, follow advice you get from experienced keepers and you will be successful with your new BP!!!

- - - Updated - - -

First of all, GREAT JOB with your preparation!! You are putting in the due diligence that many people skip over and that is AWESOME!!! You are setting yourself up for success, my young friend!! You could teach a LOT of adults a few things already!!

Keep in mind I am sharing what I know, and what my experiences have taught me. I am not an expert, and it's always good to hear varying ideas with varied success and failure rates...
A few quick answers to your questions:

-The size of the snake will vary, but just for reference, when I got my BP in mid-January he was 20" and 128 grams. As of 2/24 he was 21+" and 188 grams.
-As far as feeder size, I believe you will be fine feeding the hoppers til your 10 run out, then switch to the appropriate size
-One water bowl is enough in your 10 gallon setup, it's up to you whether you add a second when you upgrade. I sometimes add a second during dry winter months to help keep humidity up
-Honestly, if you can afford to upgrade to PVC when it's time to upgrade to the snake's forever home it is worth it. Glass looks great, but temps/humidity can be a pain in the rear end. If you prefer glass, I think a 40 gallon breeder tank is perfect. I use 40 gal breeders now and am fine with them until I can eventually switch to PVC.
-In a 10 gallon, your UTH may be enough, depending on the ambient temp in the room the snake will be kept in. Day/night lights are not required. Your BP will prefer less light and feel more safe and secure without them.
-Wrapping 3 sides of the enclosure is a great idea!
-I spot clean every time I see any poop/urates or any time my snakes make a mess exploring, spilling water or whatever. The sooner the mess is cleaned, the better. Bacteria and mold can't build up if it's not there in the first place. I also do a thorough cleaning about once a month, which includes hides, water bowl (clean water daily/every other day while giving the water bowl a quick wash), decorations, glass, etc...
-As far as handling, I would wait til your snake gets 2 meals in him/her before doing much handling. Believe me, I know it's tempting to hold your new snake, but you have 20+ years to hang out with your snake, so let him/her adjust. After that, 3-4 times a week is plenty, especially while your snake is still young. BPs take very little handling to acclimate to humans when done properly. They are a very docile species who tolerate handling well, however, over-handling will often cause stress, which can lead to your snake going off food, etc...

Kira hit the nail on the head with the thermostat!!!

Anyway, hope I helped a bit.
Like I said, you are well on your way. Keep reading, keep asking questions, follow advice you get from experienced keepers and you will be successful with your new BP!!!