ive seen sooooo many ways to keep snakes on the net and in books but what is the easiest way to house them.

I have a 28" male in a 15 gallon with 2 lights and the whole she-bang(water bowl to drink and soak, cave, fake plants, stick to climb). But i want to get more and get into breeding. Ive seen alot of tub housing and snake racks.

What do i need to have really to keep a snake happy? I have acces to 64L or 29G tubs i could easily make a rack and put these tub on them like litle drawers. But what do i need to put in there? Do they require a day light and heat lamp each? Or can i just get stick heat pad for the bottom of the tubs and bedding and thats it? and maybe a hide out?