@toodee - thanks for the additional Wasp info!
@M01C - I've been looking at the Doepfler stuff... good suggestions (is the MN FXDF retired?), though leaning to dual VCF for first filter.
@sacguy71 - I like Erica Synths stuff... the Polivoks looks good, but I think I am looking for a dual VCF unit as the first thing. Not sure this is the best idea, but it's what I'm leaning toward.
@gil909 - I bought the MIDI unit and have been using with my Akai Force (which has CV) and also Arturia MiniLab MkII and OP-1 (which don't). But I think educationally-speaking, I want to learn how to generate entirely within the modular rack itself. I can always fall back on those tools (and sell off whatever sequencers I end up not jelling with).
@Zeta_fxn - thanks for the feedback! I was up late a couple nights ago and ended up impulse-purchasing a Mordax Data. :) It arrived today and I can already see the utility. Being able to visualize signals as well as hear them (when I audible) is extremely helpful as I learn the basics.