Ideally, one unit I can rent out long term and one unit for short term (3-6 months seasonally) that I might use every once in a while / on the off season.

i've seen a few 2 families on the MLS In my price range. out bidded on one and the rest were too far gone for the price the sell was asking. but I'm working towards finding off market properties, auctions, whole sellers etc.... if I can find a distressed property thats priced correctly I will try my best to grab the opportunity.

What is a good area to invest in or around Detroit that would yield  good cash on cash returns( long term, midterm, short term rentals).

Don't take short cuts.

Does anyone specialize in selling properties with seller financing?

The remaining 85% is subject to bonus depreciation for the part you use as a short-term rental.

Your best bet would be to do a short-term rental in the ski area, but you want it to be one that is solid off-season as well.

The seller paid like $500, I paid nothing, and they replaced a water heater.

The syndicate ran out of cash reserves and doesn’t have enough to purchase the required replacement rate cap.Foreclosure/DIL/short sale may be the best option.  

Selling @ $500kLender providing $490kCan the remaining $10k be carried by seller?