However, screening of the spouse revealed debt, collections, no source of income, etc. - I would never accept that person alone.

I know that's hard to hear but it's the truth.This is why for guys who are just starting I feel like it's better for you to source deals yourself instead of going through a wholesaler...UNLESS you know and see the importance of networking with and building a relationship with that wholesaler.

I will check into hotpad and marketplace as another source. 

Looking for recommendations for a good platform where I can get reliable SFR sold and rental comps for most of the major markets across the Southeast, South, and Southwest US, including non-disclosure states like TX, ...

I've had to really on creative financing and sourcing private loans from individual private lenders in order to scale my portfolio.You've got a few deals under your belt but you have not yet achieved financial freedom.

DSCR lending focuses solely on the performance of the property.

I actually got my licenses solely as another resource as an investor! 

If this is the case are you being compensated for the service or are you solely aggregating the capital to meet the minimum threshold for the opportunity? 

I would like to treat this one as solely an investment anyway vs. my personal home.  

Ozone machines are good too but they will never get rid of the source.