Interesting approach, how would multiple refi affect my credit score?

There are a bunch of ways to do this depending on the property type, usage, and you (income and credit scores).If this is a primary residence, you can get up to 90% of the value of your home minus any exisitng debt. 

While not my main area of practice I represented a Brooklyn credit union lender, some buyers/sellers and a few landlords in real estate transactions and rent arrears cases.While we had successes and some failures along the way I ultimately concluded that I wanted to do something different with my life and cashed out of the business.

Credit unions, banks, mortgage companies and private lenders.They all had the same answer.

Ideally, you want a 700+ score.

Based on your numbers, and assuming you have a credit score high enough and have never filed for BK, you shouldn't have an issue getting approved for an HML to buy/rehab the property that I would estimate at about $370k-$375k (which includes 100% of the rehab costs).

No reason stated I had great credit score cash on hand excellent properties.

Or how to put the unpaid rent on their credit score

Big banks and credit unions will look at a full DTI(personal income) while others will just look at the cashflow of the property.

House HackAttend as many REI meetups as you can to grow your network of investors for referrals, help through challenges you may incur but don't have experience with, and learn from proven guest speakersNetworking app like blinq to compile all of your contacts for REI in one area with phone and emailbegin conversations with local credit unions exploring what type of loan products they offer