.- Lends only to experienced borrowers- Has good liquidity - 1 year lockup or lessThe problem is that no fund meets all of these criteria.

You will benefit yourself far more in the long run by networking locally and finding a seasoned real estate agent/broker that specializes in working with investors, both building and liquidating portfolios. 

I'd plan to pay off both loans within 5-7 years with cash flow from the rental and other income and assets.I'm an accredited investor and will still have more than a year of expenses covered in liquid assets and additional funds to buy another 1-2 properties in the next 2 years, which is my goal.I don't know if I've provided enough or the right information to get some opinions if what I'm planning to do with my current house and new home purchase makes sense. 

So the Fed hasn't been able to really cool off the real estate market.What if you're a renter?

Cooling features: Other.

You get easily 5,25% with short duration bills that are highly liquid, without risk, and no tenant troubles.

A cool thing to offer though is if a tenant in a multi-offers to cut the grass instead of a vendor and just allowing them a credit per grass cut. 

The next step is to pull out some cash typically a cash out refinance and use that cash to put down on another investment property.Are you strictly using your liquid reserves/earned income to buy versus using the equity to pull cash out?

I will have about 50k liquid after selling my current flip without selling my primary. 

If you liquidate your dad's home, the Big Enemy to pulling out all of his ~$100K in equity will be frictional costs (agent's commission, buyer negotiation, holding costs, etc.).