The different versions you mentioned are:1. 

The 203k might be a good option but make sure the lender you speak with offers the 203K Full AND Streamline version AND the Fannie "HomeStyle" loan as well.

They have a free version that includes some of those items. 

(So much for the short version)I am looking at 2 options - 1 selling a building to generate cash OR get a loan against the paid off duplex. 

@Lauren Kormylo @Jessica Flint @Connor Cushman I am posting the calculator that Connor alluded to and I said was inaccurate with my modified version that does take each month into account.

Yardi Breeze is the version used for residential rentals and it's $1 - $2 per unit, per month.

Always have an operating agreement because when disagreements happen without one I find it's not because people are lying or not acting in good faith but quite frankly you will have many conversations and its highly like your version of events will differ because one partner may remember a conversation had at one point while you may remember a conversation at a different point in time.  

I would like to provide them with a Spanish and English version of the same rental lease, so they fully understand what they are signing.

And now I think if you use venmo you are supposed to use a version  for business. 

I would be interested in seeing a version of DM that actually worked, didn't wear out the wrist hand-writing letters, and had a reasonable ratio of leads per $$ spent, yes.