Thanks for the great points @Steve Babiak @Joel Gabelman @Joel Rodriguez @Jay Hinrichs @Brent Coombs
I definitely wouldn't agree to do anything until the appraisals are done, those being by the builders, bank, and one I pay for myself.
It's seems to be that the bank won't approve such a loan which makes my decision much easier. I also thought it was all too good to be true when they suggested it to me initially. They claimed they'll still make 10% (I don't know how after seeing their build costs) and it will allow them to recoup some costs quickly without listing on the market. Also, although I do not have much of an income now, I will be finishing my medical residency in less than a year and my income will increase substantially. They claim this is a reason both they and the banker will want to start a relationship now. They also have a property management company, who's services they would want me to use.
Although they are offering me these 4 units "below market value" there are a lot more in the complex that they are planning on selling at the proposed $160,000. I have come across some people in my local community that know one of these investors and claim his family is well respected from a business sense, although I know that doesn't necessarily mean anything about him personally. I also spoke to another RE investor removed from the situation from my market who thinks the $1320 rent is attainable.
Thanks again everyone. I really enjoy the dialogue and it is tremendously helpful.