Selling Multifamily FSBO: Best Way to Determine If A Buyer with an Offer Is Qualified

[Tony T.]

Thanks in advance:

What's the best way to determine if a buyer with an offer is qualified?

I just received two different verbal offers that I'm willing to accept, but don't want to waste time with someone whose deal may fall through.

What are my options to enter into a contract with someone who is qualified?

(1) Ask for a pre-approval letter of some sort from their commercial lender?

(2) Ask for a Personal Financial Statement?

(3) Ask for a Proof of Funds?

Any advice is appreciated!

-Tony