Should probably have an ethanol sensor but I just haven't gotten to that yet. As far as converting, yep run it as low as you can, fill up on e85. Tell link the new AFR stoich for e85 then adjust target afr's.
I was having an impossible time getting rid of knock. Cams, stock sidemount and 93. Decided to say screw it and have been running E85 ever since with no issues. Will eventually get my fmic on but for now knock BE-GONE
WBFactor should be as close to 0 as possible. As long as your gauge matches what link says for afr then you should be able to dial that in. Turn track log on so you can see the point in the ve table where the afr needs adjusted and go from there.