How it going BP,Is it possible to combine a conventional mortgage and seller financing at closing, will banks go for that?  

Inventory is very low. 

Both markets are very competitive, quality Multis are hard to find in both markets.I found Durham to have more inventory of Multis but may not be in desirable location and are older properties...

I don't know the area but $1,700 a month for a $125k house seems off, and if you are in PA I believe that your property taxes are fairly high 2%+Also expect to pay points either way with a HML or conventional lender, the interest rate for conventional will be significantly lower.

@Tom BurnsThe are two easy solutions to the liability issue you note:Option 1 would be to have a self-directed IRA with the $100K property and a separate IRA at a conventional brokerage. 

Unfortunately, we did a conventional loan (20% down) with this one and are in for too much to make a BRRR work. 

You just need to mail more and to a larger list Caleb  if you read the NPN threads you will see them talking about the lack of product.the fact is markets cycle.. and many who did well wholesaling years ago in the bottom of the trough there just is not the inventory there to make it a viable strategy today.. not to mention how hard it is .In my mind this is a testament to real estate firming up and bouncing back.. no need to wholesale the house put it on MLS and get top dollar.of course you will always have your hoarder houses or weirdo's who are afraid of real estate agents..  

One of the buildings in my development sold for $130k (same floorplan as listed above) because the owner had liquidated her whole inventory, and that was the last building. 

First, the inventory is on steep decline, week to week. 

Should we apply for conventional loan and just use the line for down payment and rehab?