For a 4 bed you are likely looking for insurance placements for a family or temporary relocation.

And typically long term rentals don't make it easy to include property management fees into the numbers and have them still work well.I would consider looking into STR type areas where you can avoid the risk of property damages (str and pm insurance covers almost everything that they might damage) and evictions/collections.   

I have used ALE successfully but 4X rent is not what we got we got 2X there is a limit in the insurance polices as to what the insurance will pay but its a decent move at least it was for us

You will truly be raising the clock, as each day will cost you very significant money.  12% interest on $250k is $2500/mo, or about $80 per day in interest, not including your other carrying costs (utilities, property taxes, insurance, HOA). 

This is precisely why everyone should insist on title insurance.

I want to escrow taxes insurance and sewer.

Who at your firm is licensed to sell securities?

The DSCR program "Must use the lesser of the two either common rent from the appraiser 1007 rent schedule form on the appraisal or the lease".You also have to factor in the taxes and insurance because a guesstimate or ball park can kill the approval. 

However, due to rising insurance and tax costs, I'm starting to feel the financial pinch as the tenant currently pays rent 60% below the market average.My long-term goal is to acquire more properties, and I've considered doing a cash-out refinance to access equity for reinvestment.

Your insurance company might want to look at the property.