The original owner on the title is her sister (my aunt), and my mother’s husband (not my biological father) is also listed on the title.

Tons of rules here which make a condo association "warrantable" vs "non-warrantable" but just one on the list: one owner owning the majority of the units alone will typically make them non-warrantable.

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with little, maybe even negative, relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560 (almost 30% probability of default), little to no good tradelines, lots of collections & chargeoffs, recent evictions.

I don't currently have any investment properties, but will likely work with a turn-key property managment in the Memphis/Little Rock area.My goal is to build a good cash-flow portfolio to ease into retirement. 

The property is likely a little too expensive for me to qualify for with a conventional loan based on DTI.

Purchase price: $325,000 Cash invested: $50,000 This time I acquired a property that needed little to no work.

I am a little older, a little more knowledgeable now, and I’m reading everything I can get my hands on.  

You could tap the $400k of equity in your primary, but that's a slippery slope with the little financial discipline you appear to have and could quickly lead to bankruptcy.

Yes, as S-Corp owners receiving W-2 wages, employee deferrals to a Solo 401(k) are subject to FICA taxes (Social Security & Medicare).

Like in many other markets, only a minority of owners can get such figures (if they have a special property that they bought at a good price years ago for example) but the average buyer/investor will be sorely disappointed if he/she hopes to reach those figures.