1) Never test malware on your machine... Ever!
2) Zemana is redundant if you already have comodo and Qihoo. Comodo firewall and hips plus Qihoo behavior blocking and signatures are pretty good for a free config. Not sure why you use zemana. I advise you get rid of it, it's just taking up system resources.
3) Never heard of google passwords as a password manager. Looked it up, nothing came up. I think you mean you save your passwords on chrome or something like that. That is not a password manager, that just remembers you using cookies. LastPass is a password manager.
4) Since you are backing up your data to google and drop box (I do that too), be sure to encrypt it. They are well known for selling data and having terrible privacy. I myself use S.S.E universal encryption if only I am accessing it. I use PGP/GPG if I am sending files to someone.
Welcome to MT! I hope you take my advice. Ask me questions if you have any.