Get estimates for all repairs that are above fair wear and tear in advance. 

Also what is your estimated FICO and experience? 

I was estimating the ARV at 160-165k which I don't know what it will be for sure but I'm a little worried it might be less which throws a wrench in things as well.

I'm a Fractional CFO for real estate developers across the country and I ran the numbers on this deal and I estimate that if you look to a bank for a DSCR loan, you'll need to put 50% down.

Deduct NEW property taxes after you buyDeduct home insurance costsDeduct maintenance percentage, typically 10%Deduct vacancy+tenant nonperformance percentage(we recommend 5% for Class A, 10% Class B, 20% Class C, good luck with Class D)Deduct whatever dollar/percentage of cashflow you wantNow, what you have left over is the amount for debt service.Enter it into a mortgage calculator, with current interest rate for an investment property, to determine your maximum mortgage amount.Divide the mortgage amount by either 75% or 80%, depending on the required down payment percentage - this is your tentative price to offer.If the property needs repairs, you'll want to deduct 110%-120% of the estimated repairs from this amount.Be sure to also research the ARV and make sure it's 10-20% higher than your tentative purchase price.As long as the ARV checks out, this is the purchase price to offer.It is probably significantly below the asking price.

However, after running the numbers accounting for insurance, PMI, taxes, vacancy, capX, property manager, etc. the property is estimated -1.85% cash on cash return (-$600/mo) once I fully rent the property.

Also, see if you can pad your estimate with some "contingency reserves" as this way you can come do your refi only as rate/term and do not need money in your pocket at all with the rehab!

Estimate the new DSCR based on these terms.5.

I said 1 BTC ($10,000) because that's the estimated price right now.

With over an estimated $300 billion of extremely delinquent debt yet to be liquidated to the secondary market, there is a a lot of opportunity to reposition these loans, keep folks in their homes and make a very nice profit for all involved.