I'm a fan and personally keep my liquid funds in a high yield savings account.

Where would you start to grow a business that you could liquidate in 10 years if you had $500k?

I want to build a portfolio of MF homes using creative financing (starting with one) then eventually scale to larger deals. 

Credit score: 736, liquid assets (stocks and cash): 130,000My current plan of action to reach my end goal is to use an fha loan for a multifamily, refinance after a year of living there and turn that into a full on investment property.

These larger platforms will pull sale comparables further outside from the recommended radius (0.5-1 mile) thus, skewing realistic list prices.

Many larger lenders now bundle and sell their loans.

My closing costs will be roughly $2500 PLUS they are requiring 25% down payment.I have the liquidity to put in the extra 5% and $2500 closing costs, BUT I’m wondering if it’s even worth going through this.

That was one of the larger problems I saw financing the property as being an "investment property" but I think your idea eliminates that. 

Questions to ask yourself are if you are able to service the larger debt payments on your own if the investment goes south?

Is it invested in stocks or funds that will need to be liquidated, creating a taxable event for you?