I then use websites like Build.com or Wayfair to source the majority of the materials and have them shipped directly to the project site.

You chose wrong forum category, here is the correct one:https://www.biggerpockets.com/forums/51-tax-legal-...There are tons of discussions on the topic of self-directed IRAs that you can learn from.  

I may be able to direct you. 

Hello--I have a small self-directed IRA, $20,000.Were it yours, how would you deploy it?

Could you tip me in the right direction concerning options?

Direct mail is one way.

I've done a lot of research on biggerpockets, YouTube and other sources for real estate information about advertising yourself, such as: direct mail, Facebook ads, google ads, newspaper ads, Zillow/realtor.com ads, word-to-mouth.

Direct Message me if you'd be interested in joining a small meet-up like this.

Does anyone on here use Rentec Direct for their property management software?  

I would review your numbers and make sure you are entering things correctly, or your model is going to steer you the wrong direction.