It will be my primary residence. 

The Roth portion of another qualified employer plan like a 401k, 403n, etc can be rolled over into the Roth portion of a Solo 401k.The solo 401k does provide the ability to do an in-plan conversion of tax-deferred funds to Roth status (with the corresponding tax implications), and allows for generous new Roth contributions up to $18K per year.A Solo 401k is exempted from Unrelated Debt Financed income taxation (UDFI) when using mortgages to acquire real property.  

We will give them 48 to respond before we move on to the next qualified applicant. 

I take it by the working as a server you don't qualify as having capital so that leaves sales.

I am interested in finding out if I can qualify for an FHA loan for this second property; I do plan on living in the second property.

Yes, and no.No for Cash:  Someone has to have cash, if you are buying all cash or partial cash (down payment).No for Credit:  If there is a loan involved where credit is a qualifying factor, someone must be able to qualify.Yes for Cash:  There may not be any cash involved, but if there is, it doesn't have to be your cash.Yes for credit:  There may not be any loans involved, but if there is, it doesn't have to be your credit that is used to get the loan(s).

I also need to owner-occupy one of the units to qualify for the $7,500 downpayment assistance I'm getting.  

@Brandon Sturgill, I am going to assume the seller is NOT selling his/her primary residence.  

(Typical realistic expectation)To qualify your response, let us know how many wholesale deals you have done in the two years.For further insight, you can give a selling price range as well as your typical expectation for that same $25000 acquisition.I have no idea if a wholesaler expects to make $1000 on a typical deal, or $20,000... or whatever the market will bear. 

It is my primary residence.