Again take this feedback with a grain of salt as I don't know all of the details about your situation.

Details in the link below. 

You’ll have some trial and error along the way but you’ll learn as you go.As far as what’s in David Greene’s book, I think it’s good in a way but it glosses over a lot of the details and finer points.  

You need to try to work the analysis problem backwards and figure what is the best rents you can get for the level of renovation you plan to do.

@Daniel Dietz , If this deal is done via LLC, you need either article of incorporation that is detailed enough and plus an operating agreement. 

After doing a more depth analysis of what's currently renting in MWC..

More details would definitely help to attract more eyes to the post and help solve your dilemma I think.

Way to go and thank you for sharing in such detail!!

My goal (considering TVM principles) to get my money back within 5-10 years and for net present value to be better than selling and putting the cash in a conservative portfolio of stocks/bonds - which would be for me: 25% stocks/65% diversified bonds/10% cash or something of that nature yielding 3-4% after tax.My challenge still.... is the math and comparative analysis with different seller financing structuring. 

To me, this question has many details for my answer.