Now I'm wondering if this something we need to reach back out to the listing agent/seller for since it is not in the disclosures either.Thanks for the feedback.

Why not just include the disclosures and addenda? 

As @Russell Brazil state, flood zone is not a required disclosure.

(Full disclosure: my late husband, also with JK initials ironically, was the HOA president for years, but was in declining health and kept few records.  

Read the Zestimate disclosure, it says it's a total guessThe CEO of Zillow sold his home for 40% less than what the Zestimate said it was worth. 

PPM  50 ways to lose your money disclosures scares the heck out of them can't get past that.3.

are proper disclosures provided from both him and the actual seller, or just him?

I would add a clause that gives the seller to continue to market the property for back-up offers or even a concurrent escrow with another ALL CASH buyer that would go into play in the event your offer blows up.Worst case for my seller is they lose a couple of days working through your viability to close and in the event I allow a concurrent escrow with another buyer (Full Disclosure to the buyer about what we are doing and his place in line to close) there really is no downside to my seller!

Disclosure: I am not any attorney nor am I affiliated with an attorney or credit repair agency.

Take the time to read through their disclosures and rates on their site.