Random Device Offline (Clean Loop)

Yes.

If you’re careful yes, but avoid all the Edgent related stuff.
Personally, I’d start with the standalone example and get it online before going any further. Basically, if it’s not code that you’ve written then leave it out.

It’s possible to add Blynk.Air functionality into the standalone sketch, but I’d do this last of all, once everything else is working correctly.
Details here…

Pete.