Sounds like you're getting quite the deal regardless, but you could talk to an accountant or attorney and they may be able to assist you with getting the back taxes reduced. 

Also, reach to top agents and tell them you're about to get your real estate license and see if they need an assistant. 

You use the debt position to assist you in reaching your goals in terms of number of assets and cash-flow you are looking for.  

Please free to reach out, to me, if you feel I may be of assistance, to your Real Estate Endeavors.

Please free to reach out, to me, if you feel I may be of assistance, to your Real Estate Endeavors.

Please free to reach out, to me, if you feel I may be of assistance, to your Real Estate Endeavors.

I adjusted the tabular values below to reflect a tax-deductible/pretax contribution, pushing the total outlay higher on this analysis. 

But a few always stick in your mind as "educational moments" - I try to learn something new on every deal I am involved in.I had gotten into a MC accident, requiring surgery and a bit of downtime which also forced me to take time to think and reflect on a few things.

I'd be happy to assist in any way.

This is merely an opinion and a reflection to past experiences, with similar profile of issue,You can consider just calling a maintenance man, have him come out service and verify everything prior to replacing.