If u prefer freeware then Avira or Qihoo internet security is best choice, it's light ( if u disable it's bitdefender engine for realtime) , doesn't slow boot like others AV, give better protection, good detection & provides better performance. But it doesn't included any firewall so either u use ur window built default AV or if u want some extra features like HIPS then go for 3rd party firewall lke Online armor free, Private firewall, outpost firewall, comodo firewall..etc which ever suits ur need & which u feel better user friendly/comfortable. And about Advance systemcare pro, i'll say it's not really needed. For tunning PC, u only need a advance diskcleanup like CCleaner, wise diskcleaner or Privazer whichever u prefer. CCleaner provide registry cleaner but using registry cleaner won't give any benefit but if u want u can try. There r 3rd party registry defrag available , don't look at them since many peoples broke their PC using registry defrag coz it's not safe. And another tunning tool u need is to fix fragment of ur Disk. Window built in defrag works well but if u prefer advance one then try Auslogic Defrag free, defraggler or iobit defrag. Rest u don't need any PC optimization tool.
I'll recommended u a backtool tool since it's the one medicine which will save u always. there r free backtools, some are- macrium reflect , Easus todo. etc. Also it's good if u add some extension in chrome like Disconnect ( protection against spy trackers), lastpass password manager. If u prefer about ur privacy & security then u can add HTTPS everywhere ( it will try to encrypt web pages for secure connection who default use HTTP but support HTTPS), vanilla cookie manager, VT chromizer ( for checking URL if u feel doubt it's suspicious) & Don't track me google etc. Try Eagle get download manager, it's best freeware download manager. Also i'll suggest u to pick up Cyberghost free over hotspotshield since Hotspotshield can be easily blocked by ISP & many countries blocked Hotspotshield. You can use openvpn ( no logs ) too.