Does anyone know of a money market mutual fund or a fixed income fund that could be used for this purpose within my Equity Trust IRA?

Since you're using hard money for your fix-and-flip, make sure you also have reserves for holding costs and unexpected expenses.

Of course long term investments are where wealth is built, but need to find ways to quickly obtain them, which involves strategies like fix/flipping.

One problem may not be feasible to fix, and the other is easy to fix.Does the apartment complex have a unique feature that makes it more desirable? 

Same model for the children that inherit the houses, rent as is, or sell it as is. 

Change your mindset before fixing your external problems. 

I tried the BP Fix & Flip calculator but it's not really geared toward seller financing.

Fixing and flipping real estate has become one of the hottest ways to build wealth.

Current pursuit:Investor/Partner: Design-Build, Renovations, Fix-and-Flips, DevelopmentHow I can help:CAD/3D Rendering/Models, Project Management, Reduced Material Costs, Expert Design Solutions

We plan on living in the house and doing most of the fixes and renovations ourselves.