I would talk to a number of residential, private, and commercial lenders.

Since new builds require upfront capital, you might not see immediate returns, but lower maintenance costs and higher rents typically make up for it long term.If you're serious about scaling with BTR, make sure you connect with experienced builders, property managers, and lenders who understand the strategy.

Also consider all lenders will require to review your insurance when underwriting a loan and it's likely a violation of your existing loan documents to let the properties go uninsured even if they didn't require insurance escrows. 

THe lender is a credit union and it is a conventional low rate loan.

Also in your situation the 2nd seller financing partner is NOT in first position the old lender who you still owe money to is in first position as you still owe them $88k.

I would suggest going to the find a lender tab here on bigger pockets to find a local lender who has the same products. 

Quote from @Elinore Aguilar: The best way is to have the best firm with a reasonable rate and trust reviews.

And it would for real estate investors, agents and brokers, lenders, etc.

Some of the "package rate" groups start at $15k, but include the compliance reviews of marketing assets, too.  

It seems to be focused in being a broker of COGO Capital loan programs or other private lenders within the Capital Syndicate network.