Braid is ok, just don't show uo around a group during a Bull Drum run.
Here are the pics of the braid to mono fill up. If using one of the new Abu's with the slick drag I think 15# would be ok and even more capacity.
Abu C3CT Mag empty
This is what was on a 100 yard spool fo 20# PP
The C3CT w/100 yard spool of 20# PP and topped w/17# Sufix Tri+
This is how much mono came of the C3CT--As you can see the BY is almost full
Thats a hell of alot of line on a 6500 series reel.