@Britt Griscom , while it initially sounds like a good deal, I would be very concerned about your cash situation. These units don't cash flow, so the real questions is where are you going to get the capital for emergency situations? Where will you get the money to pay for the inevitable broken water heater, special asessment, unit turnover, new roof, vacancies etc.
I am also curious to know what a $40K condo looks like in Santa Fe. Even in Albuquerque, that would land you in a fairly rough area. You already have units in the area, what do your historic vacancies run? What kind of crowd does it attract?
If it were me, I would try and package them up in to a commercial loan. You would need to come up with more cash down, but you would be able to get a more favorable rate and a better price. Lets say that you can buy the units for $36K each, if you put 20% down, your mortgage will only be ~$2400 at 5.25 percent(Principle and interest only). That is a much more favorable number than your projected $5400.
Do you have someone you could partner with on the deal? That might be another great option to move this project forward. I would not bet on appreciation, especially if it is in a rougher area.