The snake should be fine left alone for a period of time as long as your husbandry is correct.

As for the random questions...
I use a small Zoomed UTH for my one and only tank( rest are in racks). I've had no issues with it, however I recommend NOT using the adhesive, instead taping it to the bottom with aluminum tape. This will make it easier to remove without damaging it while cleaning.

I use chair pads to lift my tank (and keep from scratching the table it's on):


You will need a thermostat. They range anywhere from $30.00 to $120.00. I highly recommend Herpstat, Reptile Basics VE models (more expensive), or Johnsons or Ranco (cheaper). You can find these online easily. If you'd like links I'd be more than happy to share.

I use Aspen in the tank, however newpaper and paper towels are easier to clean. Coco fiber if good for humidity but is really tough on the UTH, heat doesn't get through it very easily. I've had no issues with the aspen as of yet.

I feed f/t, all of my snakes are on f/t with little to no issues. It's cheaper and more convenient for me, however it's a personal choice so only you can decide that. I've never fed live... so it can't be that difficult to switch over. It just depends on the bp. Some are very picky some are not.

You will easily be able to find a baby normal for about $30-$60 depending on the colors or pattern. My first was a normal and I love him to pieces. However, for $200 to spend on the snake only, you could find a nice pastel.

I also suggest with the tank, covering 3/4 of the top to keep humidity in, also blacking out the sides and back with black Con-Tact adhesive paper (Home Depot $6). It makes them feel much more secure.