This becomes even more important if you’re a high earner because taxes can eat up a significant portion of your income.

I would expect that to happen.. you eat the time but should not eat the cost of the fix. 

Loans are not tithed on, since they are debt not increasse.So, if your field yields 10 ephod of wheat, one to God, one to Casear, 6 for eating through the year and 1 for planting the next harvest and 1/2 for buying a donkey and 1/2 for taking the Mrs. to town for falafel & figs. 

However, tenants have not been great, basically late on rent and/or leaving repairs that eat all profits.

Here in CA a $1.2m PP for a $2.4mil ARV is a different animal.

Philadelphia can be a very profitable market but it’s also a city that can eat investors alive who rely on bad advice.

I love it, but holy crap man those people are savage animals.

And its only got 2 bedrooms and 1300 sq ft whereas 3 bedrooms from 1300 to 1600 sq ft tends to be the sweet spot for families.I'd knock it down to 1650 to get down to where quite a few sfh's with 3 bedrooms are listed at out there and eat the 200/mo.   

If the tenant has a support animal, how to verify the validity of it?

It supports the local wolf population and other animals but not people.