All you really has to do about the big tank is to provide 2 different hides. One on each side for security. Then you can go to a craft store or even walmart and look in the isle with all the fake plants. Get a bunch of vine type plants with big leaves. NOT ones with a big hard plastic stem. Check the plants at home for any loops or areas she could squeeze her head in and cut those areas open for safety. Place the plants around the tank for a natural look and to make her feel more secure.

Big shallow water bowl in the center will help for humidity and soaking. Cover the top of the tank with something such as foil or taped down saran wrap to keep in heat and humidity. Leave the area around the heat lamp open for air flow. Cover the back and 2 sides of the aquarium. Use fish tank wallpapers or paint (on the outside) or whatever you want.

You can make it look really nice while still keeping the snake happy, secure and healthy.

Just keep a storage tub to put her in on feeding day so you dont need to mess around with bedding or her getting in the plants while trying to eat.

There are alot of affordable ways to keep a BP happy and healthy in a big tank like that. Post us some more pictures once you are done with it.