The house we are in now is about $200k.

First thing you need to do is separate the two entities- the house and the park.The house- Get the appraised value of the home which should be easy enough to do. 

BRRRR is a grind and you can't do it using Zillow and email.here's what you will have to do to be successful:-you will have to find the sweet spot BRRRR deal - a house that is distressed enough for the seller to sell below market, but not so distressed that the rehab is impossible. these deals aren't on the MLS, and they are tough to find. how will you find one?

I thought I was getting an amazing deal but what I'm ending up with is; essentially locked into closing on house where everyone expected the current tenant to leave cooperatively however, he is now planning to stay indefinitely without paying rent until getting evicted.

look for the signs that say "we buy houses "  .

I am looking to refi once the rates drop to bring my P&I down and hopefully eliminate the PMI I am paying.

Fixed rate in Texas. 75% for NOO properties.

., for house hacking, or should I invest in a multi-family property and renovate it into apartments?

Quote from @Aarati Shrestha: With current home prices and mortgage rates, it will typically be cheaper to rent than to purchase a home.

Small differences in interest rate isn’t wildly important on a lower loan amount.Minimum property value is $75,000 and minimum loan amount is $50,000.