Should I hold onto as much of it as I can and bet on a combo of cash flow and appreciation for the long term?

I would bet the solution lies in your answers to those last three questions.

You bet--i sent you a connect request w/my info if needed--best

I would not, however, bet on shipping rates staying this low over the long term.They have all the plumbing and electrical built into a centerpiece.This the sort of problem you'll face.  

That just tells me real estate must just be a safer bet than dental offices from an investors perspective, which is great as I'm moving away from dental.

CAR forms and attorneys are going to be your best bet.

Honestly, big banks have terrible rates on mortgage.Work with a broker, they are your best bet; pricing beats big banks 9 times out of 10.

This could be a safer bet as we wouldn’t have to deal with cash flow concerns post-rehab.BRRRR: If we refinance at $256k (80% LTV of ARV), we could pull out most of the invested cash.

If your brain isn't shooting sparks right now screaming "oooh OOoooh OOOHHH, where's the opportunity, oh i bet I could..." then this is NOT your thing. 

You don't know how to in hard times, and I bet you can just get by on normal times.