Norseman - Have you checked out these from Focusrite?
First get Focusrite Control setup properly.
https://support.focusrite.com/hc/en-...usrite-Control
Then look at the specific guide for Reaper configuration.
https://support.focusrite.com/hc/en-...er-setup-guide
I have the Scarlette 4i4 and this helped me get it setup. I would try to get some headphones if you don't have monitors and use the Focusrite ASIO driver instead of ASIO4All.
Hope this helps you get rolling.