Some people do that, as a matter of fact.Your scenario has a complication: you're moving into a rental you already own.

Without facts, I am just speculating and speculation complicates investment decisions. 

(This suggestion of a "debt" position or note investment with the SEP IRA to avoid UBIT and UDFI tax is a creative one... but it’s a very low chance of happening because it’s just too complicated and honestly not worth the effort from the syndicators side.

It can be as fast as 2 weeks and take much longer if it has some sort of complications like access for fire personnel and that sort of thing. 

A bit paranoid I know, but life/real estate is already complicated enough, and this is basically a long-term relationship and physical alteration affecting the property.

The math is not that complicated once you get used to running the numbers especially on smaller residential properties.

It complicates your life for no reason.  

@Bob Ross The factors that contribute to an investment being worthwhile or not are not as complex as people think.People complicate these factors in an attempt to delegate responsibility to non-emotional rationale and maintain loyalty to the "does it pencil?"

That is where the hard money can make things a bit more complicated, because not only are you planning your cash out amount but you also have to pay those carrying costs from the hard money lender. 

They could be legit but it sounds complicated even if they are on the level.