Provided the property is in a liquid and desirable market, all you'd need is to have is enough for a down payment, usually 25%. 

Lenders often turn away properties that are located in a "rural" area, so it's important to know the population and the liquidity of the market in the areas of consideration. 

That would violate IRS self-dealing rules.The IRA could do a cash-out refinance of the property and create cash liquidity within the IRA. 

Also would need it to be fairly liquid, for the possibility of finding a real estate deal.

Great credit scores, no current debt.We want to rent out two rooms to more than cover the PITI on this property so that we can use our BAH and remaining capital for some BRRRR investment(s) in the area so we can get that capital back out when we move, likely to the DC area, in 2021.For the sake of round numbers, let's say we have $40k liquid to play with after reserving money for closing costs of the first property and 6 mos of rent reserves.

If you're brand new and short on liquidity the scales might tip towards more likely no and if you're experienced with a track record, money in the bank, and a lender that's able to it may be a yes.

Liquidity ensures that you own the property - not the bank. 

Have liquid reserves on hand at all times.Thirdly, find partners with ALOT of cash.  

I have a couple of current rentals that were primary residences and it is a good strategy.The other option to get something in that price range with your currently liquidity would be to BRRRR a property using a private/hard money lender as a bridge between purchase and refinancing after it's rented out.

Likely full liquidity, if needed.