Even the Omega drivers are 23 MB. What's in the d/l more than just the plain card drivers (ATI d/l is only 10 MB)?
I'd prefer to not deal with the extra bloat.
AFAIK it includeds the old control panel.
Just the Ati drivers itself will be fine, did this in the past.
Ati Tray Tool will do anything else you need, if you need, and it doesn't need to be run all the time also, only if/when you want it too.
Without CCC you don't need .net framework either.