hopes this helps. I am starting my colony this week. I ordered 100 various sizes to get started. some suggest 250 for a large colony. I bought mine on amazon with two day shipping. expect your colony to be ready in 2-3 months at the least.
Materials:
water crystals
high gloss 18 gallon rubbermaid
window mesh
duct tape
egg flats, carboard tubes, egg cartons etc. the more surface area the better
high protein dog food, rolled oats, wheat bran, kale, carrots, apples, etc.
Try not to gut load them too much. Give the fruit and veggies as a weekly treat. the more you gutload the more humidity it will create and possibility for mold.
good luck! Ill keep updates on how my colony is going