Looks good!
Just take your time and be wary of ESD. Make sure all connections are secure and you should be fine. It's not as hard as some people make it out to be.
I have a PS3 slim that I'm interested in selling.
It's a 120 gigabyte version and I have two controllers for it.
Also about 20 games.
How much would you guys pay for this?/
With the CPU you have you can't overclock, so I guess you aren't gonna be overclocking.
In that case the stock cooler and it's preapplied thermal paste should be ok.
If you're using the stock cooler and aren't gonna overclock, might as well save $6.79 on the thermal paste and buy yourself a burger or something. The stock cooler comes with thermal paste preapplied.
Other than that it looks good.