Only a foreclosure action triggers that right.  

The reasons for this is that I heard the lender may not really allow me to transfer into an LLC, and may trigger some "due at sale" clauses like mentioned above.Therefore, I don't think I can really apply for a business bank account.

In the mean time, the HOA sale does trigger the due on sale clause in the loan, and that mortgage holder doesn't have to accept your payments and can demand payoff in full.

It wasn't until I was at my first duty station and finished my first two deployments that I decided to finally pull the trigger.

A great place to start isBP Ultimate Beginners GuideProbably not a bad thing that you didn't pull the trigger on the Masters program with Fortune Builders.  

I am worried that by opening up a credit account at that same home improvement store in the name of the solo401k Plan or IRA LLC it would trigger a prohibited transaction. 

Get in touch with @Phillip Dwyer before you pull the trigger on a deal in the Vegas area. 

If a borrower is late in paying and you have a late fee stated in the note, then FCI will trigger that and it will be added to the borrowers balance, but it is up to you to monitor your accounts with your servicer and take any needed action if something goes sideways. 

I am 30 years old, only work experience has been the Fire Service since high school, I've wanted to be involved with real estate since I was a child, and still have not pulled the trigger.

There is no way to know for sure today, but as the months go by, you can bet I will keep a close on on movements and signs that will trigger that the inevitable is about to occur.