You can take any reserves and ladder them with CDs/Treasuries/some other low-risk fixed income asset to provide liquidity in case things go sideways, all while mitigating most of the interest load on the loan. 

Use Bank statement program, Use No Doc/Lite Doc/ 1 Year 1099 - or DSCR for (Investment only) Use Asset lending where you do not need a large deposit and the liquid reserves or assets acts as the collateral to offset risk.

I am an experienced flipper, and I got into this deal with plenty of margin, so cashflowing out of it at the end is not a concern, but I need the liquid cash to get it there. 

NOI 36K.We have an additional 300K liquid and available to invest at this time and are looking to grow.

@John DeanPrivate money would but private money is short term so you are more liquid and I believe borrowers on private money are a lot more qualified and you have much lower ltv than you would on a seller finance

Some came from liquidating money from the stock market and retirement accounts for one of the properties. 

I brought over some lubricant, sprayed it on, and the key came out.

You need few but serious buyers, a list of secondary buyers in case you can't liquidate property right away through your main contacts. 

I had more than one appraiser comment that the CLV market is a declining market in their reports and when lenders see that they often cut leverage.A lender will ask for your credit, experience, and maybe liquidity. 

Spray a wall then roll afterwards.