What documents should I ask for at first property walkthru (Im going in 40 minutes)

[Shane Stevens]

I am about to meet the real estate agent and a owner of a 4 unit property for sale.
This is the first time I have ever acted on potentially purchasing a multi-family and want to ask for all the correct documents to be able to perform an accurate analysis of the financials and rental property as a whole.

What should I ask for tonight?

I am already thinking I should ask for:

1. Current Leases or 1 year rent receipts to date (to verify rent history)
2. What financial docs should I ask for?
3. Should I ask for an Estoppel certificate at this time or would that be later if I make an offer?