Thanks for the guide. Much appreciated. I used this and have similar config (except went for 3570 / gtx 670)
On sleep issues: I went ahead and upgrade to latest beta (I think F15Q?), it resolved the issue that BIOS got corrupted sometime after sleep.
Second, I tried darkwake=10 Now the computer comes to full sleep at idle.
Remaining issue: After daily reboot at morning before coffee, if I leave the screen at login screen and the computer goes to sleep, the computer crashes after login (lots of errors in console).
Still experimenting. Getting better every day.