First, the minimum requirements for PC are a GT 730 with 4GB of RAM and 8GB of DDR3 RAM, and an Intel i5-750 processor for the high-end version. For the low-end version, a GT 8800 with 512MB of RAM, 4GB of DDR3 RAM, and a dual-core 2.3GHz processor should work.
Second, I intend to add more characters such as...
Roxanne Wolf
Funtime Foxy
Montgomery Gator Female
and maybe... some secret characters :)