It's certainly not an easy or quick process but it can be an excellent way to literally build equity into your property and get a home designed just how you like it.

If the terms of the mortgages were refinanced into 30 year AM (amortization) the P&I (principle and interest) payments would appear much lower and hence the resulting cash flow would be much higher when they (lenders) go to calculate your cashflow for DTI or debt service coverage purposes.This also could be an issue with how you file your tax returns for all of these 15 doors or a combination of the above.Either way its really easy to fix.

However If I understand you properly you are still using a US C-corp to hold prperty.

Fees should be clearly stated, easy to understand, and justifiable.

It's a cool, easy city. 

Also I'd use an attorney to draft such agreement to ensure it is properly written. 

All the gurus make it sound easy, but the people I have written in these forums asking about it have all said something like, “I’m working hard, and one day I’ll get that deal!”

Assuming you know how easy/difficult it is to get approval from the Michigan DOB and how much that will cost?  

Legal, but not recommended and VERY easy to violate the law.

BiggerPockets is super awesome and so easy to use.