I'm using Emsisoft Internet Security, AppGuard, AdGuard and HitmanPro Alert (all payed). These programs are just enough or do you suggest me add something more? Thanks. PS: I'm using Windows 7 x64
I'd say you are in good hands with that setup. That's a nice combination. Although ensure you've got a regular backup plan to backup important data.
Adding anything else would add heft, of course this is my opinion. I think what you have is enough and quite secure.
Maybe add Norton ConnectSafe DNS. Only changes which DNS server you are using doesn't install anything. Adds some security by blocking bad websites and you never have to update it. -https://dns.norton.com/
It depends on you, but I would say: no you don't need anything else, I think you've got everything covered.