For a 3 br 2 bath, depending on the area, I’ve typically seen 800-850 for rent.I think that combined with the financing being on a 20 year amortization is where this deal falls a little short.

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How much does it typically cost to insure a multi unit?

I was able to get some valuable insights from this book I read titled, Never Split The Difference , and essentially it teaches you that you have to look for information (in this case it would be from the tenant) that is causing him to act in a difficult manner.

I am a Superhost and manage properties out of state (I'm in California and I typically invest in Florida). 

Closing on the other hand depending on the time of year with a conventional lender will typically be 30 days minimum.

Agent commissions are typically fourth highest after HML fees and also significant.

There is just so much more that goes into it.In a value-add deal the business plan is typically to go in and make improvements to the property, which ultimately allows you to capture higher rents. 

Essentially, you should live on the MLS of that area.

In regards to the your current PMI, they are are typically required to drop PMI when you reach 78% but, you may need to request that in writing to your lender most require it and you need to be current on your payments so far.