This is what I'm trying to achieve:

The things I've tried in my DAW are setting the force capo at the 7th fret, setting the string to both the 5th and 4th, just the 4th, and setting the force capo at the 7th fret while setting the string to the 5th.
I can't really think of anything else to do.
I just want the fatter sound of the 7th fret octave over the 2nd fret 3rd string.
I'm going to be seriously disappointed if I have to set up two separate instances of AMR5 just to have one play one string and the other play the octave.
