This actually seems like a great scenario for a 1031 exchange based on what you've said.

The thing to know is that there are a lot of seasonal owners so, many properties that look "vacant" are actually held by out of staters from MN WI and IL.

Yes, you can deduct related expenses including gas, loan interest, insurance, etc. using the actual vehicle expenses method to deduct auto expenses for your rental or other businesses. 

I did that out of necessity with my first 2 houses and was able to buy in a nicer neighborhood than I could actually afford because they weren't updated. 

We see mis-listed units all the time, but occasionally there's actually an additional one per the assessor. 

We actually just had several go in on Livingston ave on the west side where I'd not normally think would be desirable, but they look great and really brought the block up.So I'm a huge fan personally from seeing them go up in my own area.  

We don't bait and switch, we work deals based on actual details of the client's specific deal.

You can actually look it up.    

The reality is that you will not find that in the seller finance space, and even if you do, there will be virtually no discount. 

And that's just a 2 unit, obviously the numbers creep closer to actual investor-numbers with a 3 or 4 unit pumping in more rent.