Prevx Upgraded to WSA

I used Prevx 3 on a spare PC, and recently it upgraded to WSA, without warning or asking me. 
I checked it out to make sure it was a ligit program, and decided to proceed to see what was up. 
I used Prevx 3 as a  backup to my main AV, a secondary AV. I also use another firewall. 
My questions are these:  Can I still use WSA as a backup to my main AV, or will it conflict with it? 
If I just disable the firewall and Realtime protection, will that work without conflicts, or are there other 'Shields' that I should also disable? 
Or, should I just remove WSA from my system. I am already quite satisfied with the AV and Firewall I am currently using, and don't need conflicting apps. 
 
Thanks.