WSA it's a decent solution. Seems light enough your configuration.
Do you use any registry maintenance tool?
Not everyday we see a windows user using bleachbit. That tool is the goto in linux but on windows I still prefer good old CCleaner portable version. Not saying it doesn't work because it does but had some bad experience with bleach on windows in the past. Probably due to a buggy version which as since been patch.
No registry maintenance tool. Bleachbit has never caused any problems and seems to work as well as anything I used in the past. I have replaced windows FW with Comodo FW (sandbox enabled).