hi friend! i'm fairly new to cresties myself, but i've had mine for about 5 months now! he's 2.5 years old.

that's going to be a very big enclosure for such a lil guy. you might want to consider a 12x12 in. otherwise your new lil one might have trouble finding food!

paper towel works really well for cresties as they might try to eat substrates. i'd recommend paper towel, plus it makes clean up a breeze.

the size of your food/water dish is important. you say small and medium, but that's relative. my guy feeds out of 0.5 oz cups and those are actually too big for him. a big food dish means you're going to waste a lot of food, and your crestie might step in it and make a mess lol. start out with a bottle caps instead.

depending on where you live will depend on whether you need a heat lamp or not. cresties do not do well with temps anywhere near 80° F. i do no use a lamp; i live in the midwest and my crestie enclosure is on the northeast side of the house, which never gets above 75° F in the summer. i might need a lamp come winter, but we'll see.

one critical piece of equipment i don't see listed: a mist/spray bottle! crestie enclosures should be well misted every day or every other day. cresties are also known to prefer to drink water droplets off of plants and the glass, so it's important to spray regularly!

i hope all this helped!