You guys covered it pretty well why it is not a prohibited transaction. It needs to be 'set in stone' going in and for eternity. ;-).
As far as easier ways.... maybe, depending on each person's circumstances.
In our/my case, I have about 20 times as much in my IRA accounts as I have liquid cash, at least until I get my primary residence sold (im downsizing even though I have it paid off) which will free up some cash. So to me, the IRA was a logical place to go, and also offers some nice diversification to the stock side of things too.
So yes, there is a LOT to know abouut SDIRA, but I think they can be a great tool. One other thing is I have mine in a ROTH (partners are traditional) . With the small amount you are talking about, now might be a good time to consider converting over to a ROTH and have tax FREE income down the road.
For those interested, UDirect IRA put me in touch with (I am working from memory here) I believe the lawyer was Mark Kohler Law Offices. If you google them they have some good youtube videos about SDIRAs (as does UDirect/ Karran Hall). They are the ones that set up the 3-way LLC for us, and for a good price too, I think abouut $1500.
Dan Dietz