Well, based on my experience don't expect everything to go where you plan.
For instance on the C:\ drive I have under Rapture a folder with .wav samples in it.... not what I wanted.
On the S:\ drive I have Rapture data under a Rapture folder and few .wav in there too. But then on S:\Cakewalk Content... I have a Rapture folder with samples in various instrument folders... This latter is what I expected.
Why some other things get scattered in various places, I have no idea. It's not the end of the world, I'm not going to change it. It's hard to believe though that in 2017 with all the software vendors knowing people like to organize software, plugins, and samples from many different vendors into places that work for them, why they can't provide for that. It's like they try to make a mess of everything as though they were the only music software on the planet... and I don't mean Cakewalk... it seems like everyone has some special place they want things that differs from everyone else.
Oh, BTW, if you too are installing SD2.. each drum kit is about 20+Gigs and one option is to delete the download after it installs. So if you are worried about the use and deletion of files on an SSD