@Elmer Urias I ended up buying a vacation rental on Emerald Isle NC instead of Ocala.

Three and four units properties tend to be slightly more investor facing, but there are still a lot of regular buyers that pick up three and four units as well.

it will be a corporate/wellness retreat/short term rental destinationI need land that is close to the Action, but not too close, and preferably comes with two single family doors already built, so I can take advantage of Fannie Mae owner occupied loan and develop the rest of the land on my own and with private funding.Is Columbus a good market for this strategy?

Rents have been pretty close to what the housing authorities advertise, sometimes even a bit higher.Fort Wayne’s a solid spot with low taxes and good cash flow—definitely worth looking into.

Having the seller carry a second is not a problem for the first, as long as their business with you is finished and the loan has closed.

I currently own and self-manage two STRs in Maine and should be closing on a small 'cabin campground' with 10 cabins nearby that will also be operated as STRs. 

Since you're so close to Loyola and not too far from Northwestern, I imagine you might have a pool of people who need temporary furnished housing while they study, do a medical rotation, or travel in the medical industry.

Since I'm a new immigrant with no credit score, a DSCR with 30-35% down payment is my only option, so the 50K need to include that down payment alongside all other costs (closing, rehab, etc). 

If you end up in Cleveland you'll want to read The Ultimate Guide to Grading Cleveland Neighborhoods to give yourself an in depth idea of the market.

Often, owners beat up PMCs for a low price, but fail to understand the PMC will often cut corners to make sure they are still profitable.