I never used it but I would search for a group that has a count of 16. 

Does the time and effort behind designing, permitting, and building the ADU count towards the REP status?

Count the 10/15/20's.

If you're counting on getting some financial aid for your children's education, you'll want to take a good look at how owning an investment property (negatively) impacts financial aid.

If borrowing against stocks is an option, do they have to be stocks held within the US and/or do Canadian stock investments count as well?

Quote from @Angelous Ultionem: If you're married one fha loan counts for you both won't it?

I've lost count of the number of RAD investors who posted in the BiggerPockets forums about their "hard money loans" and then having their distributions "frozen".

I have my rent average at 875 not counting the section 8 tenant I have which pays me 1270 a month.

You’ll want your cpa to help determine which hours count and which hours don’t count. 

All the other real estate in my businesses are counted as assets minus the debt liabilities for net worth purposes and the business income that comes to me is counted as part of my personal income.