I don't have experience with quads, tri's, or duplexes but I see it is slim picking on the quad front so like you a new build makes sense to me as well.

Any cigarette butts from smoking outside by you or your guests must be picked up and properly disposed of.

The picking up/ delivering keys to/from tenants is always a hassle!

As a start up building firm, a business plan with a worst case, best case, most likely case financial scenario played out for a seven year term into the future- will probably reward you with more specific dollar amounts that you could potentially earn, then simply picking large dollar amounts and asking how do I get to these figures from this small borrowed amount I have.

Reversible cushions. measure the room and make sure you pick a good size for the room so it isn't crowded.   

Winter is slow.So if you picked up a couple of nice, used 4 season trailers, they could do OK IMHO.

But if I try to think about 5 years from now, I see a lot of repetitive low wage jobs automated.Look at these fruit-picking drones.

We are real-estate investors from CA & trying to pick an OOS market with Tulsa (stable economy and future outlook, modest appreciation & reasonable cash-flow).We heard from family/friends about new construction duplexes around the Tulsa metro targeting investors. 

A lot of wholesalers are trying to pick apart the description of "wholesaling" and making assumptions on the "marketing" aspect of the new bill.

Until you have something picked out.