New
#11
Sounds good so far. You don't need to reinstate any of the Startups or extraneous Services except the AV you settle on, any sync, gadgets or stickies. Some users also need a messenger or Skype ready with the desktop.
Let us know if after a few reboots the hangs don't reappear with the Clean Boot. This would point to one of the programs which had been freeloading at Startup or in Services.
I'd only research repeat Errors (not Warnings) in the Event Viewer's Custom View>Administrative Log. What I do is type verbatim text of the error and identifying numbers into Google to read how others have resolved them. The ones you quote are negligible and probably related to running two AV's which is not a good idea.