I've been pondering my next build, and (after a bunch of measurements) have decided to use the drivers I have in a different layout.
So I'm doing a stepped baffle with the Neo 3 and Neo 10, then continuing the OB by using a pair of Peerless SLS10s a side in a slot loaded/W baffle.

This is in a smaller space than usual and my SLOB test baffle indicates this will give me the extension needed at the volume I'll be listening to. I have subs if needed.
The interesting experiment will be the crossover. Normally I go fully active for xovers and EQ with MiniDSPs and 6 channels of amplification, but I'm going to see what happens if I use a cheap-ass generic 3 way passive crossover from Parts Express with a combo of speaker EQ from a MiniDSP and room EQ from Anthem ARC.
I've previously done a test with the top section using a passive crossover and ARC to do the dipole EQ and it kind of worked.