Hi,I run a short-to-mid-term rental business.

Additionally, income from an active business inside of a retirement account will be subject to UBIT (unrelated business income tax), so be sure to consult with a qualified tax professional about the implications. 

It's a cost of doing business.

Your friends might not fully grasp their financial situation at all.Stash that entire $2k cash flow into your business savings until you have enough in reserve in your business to cover vacancies. 

I try not to mix friends/family and business, history usually proves it doesn't work out.

I'm looking to build a wholesaling business around SFHs here in Southern California (Riverside County, specifically), then expand in time to MFHs, possibly commercial.

Here’s my honest opinion; not trying to be overly critical, just hopefully constructive adviceYour plan sounds like a newbie with no money and experience trying to wholesale Look, wholesaling real estate is a BUSINESS.  

Since I last posted we now have seller lead service, skip tracing, API integration for direct mail and a mobile app for managing your business on the go.

I've already stopped cash bleeding in all areas of my business over the past 45 days and I am freezing all improvement projects and released some existing staff.  

Which will bring plenty of other investors and general business to the area.