How to vet a private lender as legit

[Keith W.]

I was approached via email an offer for private funding. The terms seem too good to be true. 100% financing. 100%LTV.

Loan term 1- 5 years. Option to pay monthly or annually. No prepayment penalty. All funding upfront. Credit score 350. 

Funds provided in 1-3 days. 

All I would have to bring to the table is the closing costs. 

My street senses are telling me that the money I'm bringing for closing costs could be lost if this guy is not legit. 

This would be my first deal and I really can't afford to make mistakes.

I've tried looking up his profile on social media and Google.