It's best to have identical hides on each side. Also, if space is an issue you can easily house in Rubbermade tubs. Lots of people here do it.
Oh, and here is a great website to order from...www.reptilebasics.com. The owner is very knowledgable, and answers questions quickly. You can get your hides, and the thermostat there. You can also make hides pretty easily out of tupperware containers, just make sure the sides aren't clear.
Don't forget, the thermostat is extremely important!! If you can't afford one right now, a light dimmer switch from a hardware store can be used to regulate the UTH, but it's a lot harder to dial in (especially if room temps fluctuate).