Hello BP members

Today i went out with my kids to the pet store and we all got to handle a red tail boa, Colombian motley (both babies) and an adult BP and a baby BP about 1 year old. remembering your guys advice i had to refrain with all might not to buy that baby boa ($120) but wanting to make some kind of progress on this as bringing my daughter was a bad idea.....obviously she wanted all four snakes we held! but i asked her to pick one and she chose the adult BP. instead of buying the snake i bought a 20x12 aquarium with locking cage top and the aquarium has a heat pad installed on the bottom that takes up just a little less than half the tank. i also bought an exo-terra glow light with an infrared 50w bulb. the tank is 12.5" tall and the bulb chart says the heat coming from this light at that height is 73 *F. is that ok? and also, im almost ready to pick a snake what else should i get for him/her to make the snake very happy?

I really appreciate your guys/gals help