Very glad it worked so well Phillip. I've got Bitdefender with a couple of our 10 installs... one I needed to update versions anyway, so I uninstalled 1st, installed the newer version after. The other I just let it alone and it seems to have survived the process of upgrading to 1703. McAfee seems to have survived the upgrade on another device too, so **maybe** Microsoft fixed the problems that used to be common if you didn't uninstall 1st.
After the upgrade there should be a C:\Windows.old\ folder. In it there should be Program Files & Program Files (x86) folders -- any apps that didn't make it should be in those two folders, though there will also be older versions of folders Windows uses too. If you open File Explorer [Windows Explorer], right-click on the C: drive, & select Properties, you'll see a button on the lower right called Disk Cleanup. Click that, & when it gives you a dialog/info box, click the button for system files. Once that dialog box pops up again, check the boxes for stuff to get rid of, e.g. your old copy of Windows. Once it's running you'll get one message box to click OK. You should be able to regain 20-30GB. [It's also not a bad idea to run Disk Cleanup after regular Windows Updates. April's didn't amount to much, but in the past I've regained over 1GB.]
You mentioned Edge... Be Careful. They recently had a Pwn2Own, & Edge was declared afterwards by some security folks to be the least secure browser you can use.
wikipedia[.]org/wiki/Pwn2Own
While I'm going to seem to blast one of their articles in another post, Windows Central often has articles featuring Windows 10 games from the store.
windowscentral[.]com/
I use to have Bitdefender. Was the best for a while then Windows 10 came and I had nothing but trouble with it. Did a lot of research and everything pointed to WD and Malwarebytes being all you should need. I was a bit iffy about it but found that if I used those two along with Adware Cleaner from Malwarebytes I have a pretty sane computer. Well for me it is. I also use Hitman Pro Free when I think there is something funny going on. Used it once and removed a few crap myself and its been wonderful since.
Cool!
We used to run McAfee, frankly because I got it so cheap from Dell Home [like $4], but then Intel bought them, & suddenly it wouldn't work on our AMD PCs. I've started using it again, also again because I got it cheap [sigh], but it seems lighter weight on things like the miniPC, which is really low power, and when I had to upgrade versions of Bitdefender it broke VirtualBox in win7, so I'm running it here too. Haven't had problems with Bitdefender in 10, but Windows Defender used to give me fits on a couple of copies of 10, though they seem to have that fixed finally. Defender also scored Quite a bit better than last time on the new av-test[.]org tests.