Feed. F/T. Thawing is not a hassle. Put mouse I. Warm water. Wait. Done. What would be a hassles is having to feed and clean mice enclosure when you are stuck with one for sometimes months on End when your Bp has gone off food. When it's in your freezer you keep it wrapped up so its safe. You wouldn't buy mice, open them up, open up all your food and then toss then together would you?
Feed it in its own enclosure. Don't move it. People that believe you need to do this, and for the reasons explained why you should, are just gullible and inexperienced. Your question on why you Maybey shouldn't move it are correct.
Males and females have no difference when it come to how docile they will be. And males tend to be smaller then females but all bps are a smaller type of snake. They tend to only be around 3-4 feet.
Spiders had breeding value a few years ago but like the above poster said, you can get them for like $100 now. They aren't very valuable compared to what they once were. You shouldn't buy to breed anyways. There are enough breeders on the market. If you bred yours there is more likely a chance it will cost you more then you sell them for and you might not even be able to sell some of them and get stuck caring for them.
It does sound like you only want one with "breeding value" so it will be easier for you to sell it later. If you are buying it, and planning on just getting rid of it when because you know you won't always want it, then just don't buy it in the first place. There are WAY to many unwanted reptiles in this world because of people like you. These creatures can live for 30-40 years. If you aren't gonna wanna care for it for that long then don't get one. You would just be adding to the problem. Bps are so common in the market there is always some new morph coming out that drops the current morphs values. So anything you do buy, when you go to sell it, it most likely wont be worth as much and might not even be a sought after morph anymore.
You should only buy a rehomed Bp when you get one. You can generally save a lot of money if you wait for the right one. Just make sure it has the proper enclosure if it does come with one. And because you plan on just getting rid of it at some point at least you will only be putting back an unwanted reptile into the pot instead of adding a while new one.