Would you know how this may affect my qualification for this type of loan? 

I also have a pre-qualification quote from So-Fi which seems like a decent deal actually but I know people get weary on the internet based lenders.

Its a numbers calculation not a pre-qualification standard.

So it’s not necessarily in the property manager’s best interest to locate the best quality tenant, but an okay tenant that might be close, but doesn’t quite meet the qualifications.

My qualifications for a tenant are pretty simple.

I had 15 year loan on my triplex for a while,   but the most recent refi I did (which still lowered the rate substantially) I went back to a 30,   in part so that I increased my loan qualification ability for future purchases.   

If it's a larger organization, feel free to inquire about their different staff qualifications.2.

You have more control perhaps on tenant qualifications, you can shop repair providers....you may market hustle vacant units better than PM, so have less vacancy....so there are advantages and disadvantages to both. 

I know it limits which contractors you can use, but I'm not sure about the qualification process.

I assume their "qualification" is something very difficult and I would guess you probably make very little money.The 2nd job seems more like a mentor program.