Please help me finish an old build thats been delayed for too long.

I started this build about a year and a half ago i think but since then ive been off and on with jobs and other life crap so it's been delayed for a while. Since im kind of stable now (knock on wood) I can finish this.My knowledge of if this stuff isnt the same since im not as big into this as i was before. Im not sure what else i really need other than the HDD, Video card, CPU although I have one set aside for me ill list what I have so far. My Budget is under 800 for the rest of the parts but please dont be ridiculous and Im going to be using this as a gaming pc.

http://www.newegg.com/Product/Produc...82E16813130239
MSI P55 GD65 MOBO

http://www.newegg.com/Product/Produc...82E16817371021
Antec TruePower 650 Watt PSU

http://www.newegg.com/Product/Produc...82E16820231179
G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM

The CPU that i kinda have set aside is this


Intel Core i5-650 Clarkdale 3.2GHz LGA 1156 73W Dual-Core

itsv the only thing i can find that is compatible with my mobo that i have.

So please if you guys could help me finish this it would be greatly appreciated!

Again I physically have each item listed except for the cpu. So whatever else i need please recommend.