Wish,
At the moment, don't worry about attaching midi keyboards, etc. Save that until BIAB is up and running... I've always found it best to sort out one problem at a time. Also, postpone loading Forte DXi. At the moment, simply use Coyote WT. (Don't worry about Realband at this point in time either. We'll get on to that in a bit.)
If you go to Preferences (#1 on the below image), set everything up as I have highlighted and numbered below (#2 - #9). (You already have most of these settings in place.)

This should get you up and running.
Let us know how you go.
Once the basic set-up is up and running, then we can look at getting Forte DXi and your external keyboard going.
Regards,
Noel
P.S. BIAB will install to C:\bb and Realband will install to c:\Realband