For your ultrabook, you may change for lighter AV like Avast free, Avira free or Qihoo IS free then if wanted to test trial versions for lately purchase then its Kaspersky, Norton or ESET. (Just choose one)
McAfee is good product but likely not as good at all.
Thank you for your answer, @jamescv7
Btw, as far as I can see, McAfee IS 2014 does not come with a proper firewall. It provides only a crazy interface that shows Windows Firewall's status. Am I Right?
@jamescv7 oddly enough, I can't find it anywhere.