I just finished building my first gaming pc, (woo hoo!) And while I was buying parts, I would upgrade some as my budget allowed. Because of that, I have a case, a 500w 80+ bronze power supply, a z77 motherboard that may or may not work, a gtx 750 (not ti) and 12gb (2x2 and 2x4) generic ddr3 ram. I also have an optiplex 790 dt with an i3 2120 and 4gb ddr3 in that. I am trying to decide if I should buy a cpu and motherboard, finish the build and sell the complete build and the optiplex, or should I try to sell the parts as is. If I should complete the build, what would be a recommended cpu/motherboard and a good price to sell it at?