That might be your best bet.

Best bet would be to see if either has a professional certification or license in your state and then complain to that board about an ethics violation (or better yet, threaten the complaint to both of them). 

@Clark ChildersYour best bet is an excel spreadsheet.

Depending on the size of your units, have you looked into ductless air conditioning?

I'll bet I've watched 50+ videos, and I know I'm up to 800 letters.I was going to send out 1000 "I Buy Houses blah blah" letters, but...I started watching YouTube guru lease option videos, and then I watched a couple "use master lease options for apartment building investing" videos.A couple guys on Youtube said anyone one can do it, so it has to be true.

Your best bet is to establish a relationship with at least 2 mortgage brokers in your area.

It doesn't sound like he has any plans for it and I bet he would like to stop paying the taxes on a vacant property.

$1,000,000 would be the loan size to generally be considered for non-recourse.  

To give you a slightly different perspective Grant, I'm in Southeast Mass. and have been buying and hold in multis of commercial size 5+ units. 

Increase in Family Size - A borrower may be eligible for another house with an FHA-insured mortgage if the borrower provides satisfactory evidence thatThe has had in increase in legal dependents and the property now fails to meet the family’s needs; andThe loan-to-value (LTV) ratio on the current principal residence is equal to or less than 75% or is paid down to that amount, determined by comparing the outstanding mortgage balance to a current residential appraisal.Vacating a jointly-owned Property - A borrower may be eligible for another FHA-insured mortgage if the borrower is vacating (with no intent to return such as divorce, legal separation, etc...) the principal residence which will remain occupied by the existing co-borrower.