It wouldn't hurt to get a decent AV product in there somewhere, unless you are happy with comodo's cloud AV. A lot of people aren't very impressed by it. True, SecureAPlus is great, but it doesn't have a true AV component, unless you downloaded Clam. I assume you didn't. Anyways, Clam ain't so good. So you are left with only the SAP multiple cloud, and it doesn't block malware, or dig deep and analyse. It just politely scans and notifies. Could be too late by then.
MBAM premium is not a AV, either. It is just a complement to an AV.
That's why I say you should get a decent AV in your config, unless you have Comodo firewall all tweaked out to super protection level, and you rely on that.