He is required by law and by ethics to represent the seller's best interests. 

@Sean McDonnell You have a good work ethic, and you sound like my wife and I as far as taking care and running STRs. 

Yet it's a good principle to live by.  

When you use 0% down, you have a higher principle, which means higher payments, which means lower cash flow.

Ideally your value add, as well as any principle pay down, provides the equity such that you now have 20% or 25% equity. 

I put cap ex at 1000 per door a year ball parking it so 160 a month I am not including the studio in these evaluations because I will live theremaitnance as 85 a monthvacancy of 160 a monthSo over all looks like this so far.40k downprice 158500rents 1700 monthtax and insurance 560monthcap ex 170 monthmaitnance 85 monthvacancy 160 monthall together 975 a monthsubtract that from both units rentAnd there is 725 left over enough to cover the principle and interest and leave like 100 bucks left over for my utility's and such.current owner says the coin laundry downstairs covers the water and tenants take care of there electric and suchNow just 100 left over isn't much only 1200 a year not a very good return on 40k but when I move out and instal a fire escape in the studio as I live there I can rent that for another 550. after I adjusted the numbers for the studio this deal looks really good because I am able to keep pretty much everything the studio would produce.I'd get like 6k a year and get a 25 percent cash on cash which sounds as delicious as it can get.It is in a working c class class area. on the worse side of it. that's were most of the duplexes in the area are to be honest.

The 15 year note might yield less cash flow per month but you will pay down principle faster and pay less interest over time.

Or can I apply the same principle to the ongoing PMI that I pay each month to determine if refinancing under a higher interest rate would still be more lucrative than my current mortgage with PMI attached?  

More over, a good syndication will provide each and every private investor, key-principle and co-sponsors all the necessary information on all vital team members who are part of making the deal work.

For example. if the payments are principle and interest and you take over, a partner who has money can help in tough times.