Often, I am not able to keep all of my ira funds invested in active loans so I would like to be able to keep the money that is not invested in loans in a liquid "money market" type of fund on a temporary basis.

Quote from @Robert Jones: @Kristi Kandel what market are you in? 

You may want to get in touch with @Sharon Vornholt who has done a lot of marketing in this niche.

I find it strange that no one has if it's allowed, but if you are first to market, you are essentially the guinea pig.

A frank, hopefully insightful, dive into real estate and financial markets.

I have the option to buy a 1,300-sqft 3-bed, 1.5-bath house in South End neighborhood of Stamford, CT, from a family member before it goes on the market.

And this is so market specific..  

Milwaukee Cleveland Toledo great markets.

Now there are tertiary markets in the US that will be low value assets but not super high risk those are your smaller towns but your upside is severely limited.

If you do not qualify, you would then look into if you would qualify with renting your departing residence. 75% of the lease will be used to offset that departing residence mortgage. as you mentioned the timing of renting the place can absolutely be tricky so you would hope you do not have to do this.Finally, and I guess would be sorta of a trick, but we do bridge loans on occasion in this case IF you can qualify once you get the property rented at market value even if debt to income ratio is too high before it is rented.