Thanks for the replies so far guys! I really appreciate it. For your knowledge, the building isn't actually on a concrete pad, its all treated lumber, reinforced (could easily park a multi-ton vehicle on it without any damage), and is sitting atop a moisture barrier. This was done so that when I eventually move from this duplex apartment, I can simply rent a truck and haul it away to my new home. I'm planning on using a window unit for a/c during the summer, and a flameless space heater with no exposed hot surfaces during the winter. I had considered a de-humidifier as well, after all, they're dirt cheap.
Any other advice and concerns is welcome! Thanks again guys!