Lose the light fixture unless you wanna get a CHE...
Plastic or anything really would work, I taped foil onto the top of my tank. Only problem is its really noisy and can rip easily :/
I use reptibark and love it. (sort of). Well then again I also got it on sale... the biggest bag they have for under $15 or something like that. PETCO (its cheaper)
Yeah that might be a bit ludicrous way to clean it... I just spot clean. Thats it... and Ive never had to really re fill the tank at all...
The main problem with repti bark is its REALLY DUSTY. which is bad bad bad... I washed mine in water sort of like how they tell you to clean it... all the dust turns the water red. But besides that... yeah its probably not worth it but I like the look...
GET A THERMOSTAT... Its a must. and LEARN HOW TO USE IT CORRECTLY so it doesnt think that its cold and heat itself up really hot...
also, i wouldnt get branches but fake plants and stuff to take up space if you have a large tank work great. Gives your snake something to hide under when theyre out...
I would also say that a spray bottle is a must... at least for me...