Quote from @Vikas Jain: Yes, I have already seen the buy-in, im less concerned about that part of it, but just want to make sure its legitimate (plenty of opportunities where buyin is high but it doesn't always mean the product is good, just been burned in the past by others so trying to do better due diligence this time around)Their success rate, as of now, is 100 percent.

As a PMC, we allow tenants to:1) Mail in rent (we charge a Processing Fee)2) Deposit at our bank (we charge a Processing Fee, but less than the mailing one)3) Use Zelle, Venmo, etc. 

Legitimate lenders may charge a small application fee (around $250) to verify you’re serious, but if someone’s asking for thousands with no real intention of closing, that’s a huge red flag.On a more positive note, there are creative financing approaches out there.

The lower the score, the higher the risk and the more we charge for a deposit.

Alternative is the sherif evicts him and I pay tax and insurance.I know we can have a gentleman's agreement on these things, but im still afraid he might be able to legally sue me if we have a legitimate residential lease?

It is not legitimate and I do not legally owe this balance, but have been unable to get it removed from my history unless I file suit against the company.

Some try to charge an up front fee.

Your PM is not communicating, and this is a legitimate concern.

Like what would the keywords be for it to be legitimate? 

At this point, I'm not so concerned about achieving that exactly, but if my REI journey takes me there on my way to (or even after) financial freedom, then I'm all for it.There's still some work to do to prepare financially for "the first deal" and that moment legitimately appears to be about 2 years away.