CCleaner = must-have. Turn off all the auto stuff; just run it after patch Tuesday's reboot and before your monthly defrag (if you have a platter drive) with MyDefrag.
Browser adblocker (how do people suffer ads, really?): Adguard
Windows Backup if your external hard drive is large enough...save you some time and gives you a bare-metal restore option. (I'm assuming Windows 7 backup is on Windows 8 as it is on Windows 10)
Edit: oh yeah, on-demand. MBAM free definitely and herdProtect or VirusTotal uploader