BDFB setup advice

Kinda long post since I want to be thorough with questions and such 👍🏻

I was in pet Supplies Plus today and saw that they had at least 2 BDFB's for sale. I've been thinking of getting some for a while now so I'm going to go back to buy them tomorrow or the day after if they are still there! however I need some advice on how to set up a tank for them in the meantime

I have an empty lidless 10 gallon ready to go, so it should definitely be big enough for 2

1. Should use some of my remaining zoo med reptisoil I used for my isopods as a thin base layer before putting in sand? I only have enough to cover the whole tank in about a half an inch, but I can get some more if need be

2. What specific sand should I buy, and how much? I was doing research earlier and have seen that fine sand (?)/play sand isn't suitable, and I should go for bigger granules because it's easier for them to walk on... Links are appreciated!

3. My room is warm even though it's winter here in PA (my room is in the attic so it's naturally warmer) so should I still get a heat lamp for them? And what about a normal lighting? It's not possible for me to put them in direct sunlight since I have a radiator right in front of the only windows in my room

4. I have heard varying sources say that giving them liquid water is good and I should use an ant waterer or water gel crystals, while others say that they don't need a direct water source and are fine with getting it from fresh fruits/veggies. Should I just get an ant waterer to be on the safe side?

5. Finally, for now... Is there anything else I should know?

I only have experience with isopods so far and I have 3 colonies lol. I know BDFB's shouldn't have calcium sand, and avoid a moist habitat except for (allegedly) one corner... But should I be adding anything else besides wood and rock hides? Perhaps some dry (or moist) moss? Should I toss leaf litter throughout lime I do with isopods?

These guys seem really cool and now that I have an oppertunity to buy them for a reasonable price in person I wanted to finally commit to them!

If it doesn't seem like I'm ready I completely understand, but id still like to start getting an enclosure ready for the future regardlesss