To be honest, when I first saw the setup my though was Hermod, PAMS... then bring down an FXaid, the Cosmotronic and Caio.
One case for most of your inputs, sequencing and for your final FX and outputs to whatever.
I do think you'll have no problem sequencing all the things regardless what you decide for the drums (all good choices of course).
Cheers!
-- Dub007

Thanks for the feedback...Still struggling a bit on what the best 'extension' use of the 3U might be but appreciate the response!

JB