Hi all and apologies if this has been covered ad-nauseum previously.

I recently booked an award ticket for KIX-ICN-AMS-OSL, all business class and KLM + KLM cityhopper metal for the ICN-AMS-OSL legs. Flight is not until May 2024 so I definitely expect some schedule changes, but right now it is scheduled for 1h30m connect time in AMS.
My question is, what kind of connection time should I expect in AMS for this itinerary? Since I'm transiting from a non-secure, non-Schengen country (South Korea) I gather I need to clear both immigration and security in AMS? Would I need to recheck any luggage? I have both a USA and a Swiss passport if there's any difference in respect to transiting to Schengen. The ICN-AMS flight arrives quite early (0530) so I don't expect a huge queue, but correct me if I'm wrong in that respect.

Ideally I'd like at least a few minutes to spend in the KLM Crown lounge, but I have a feeling it might be rather tight. My ticket shows I have access to the KLM 25 Schengen lounge, would I have access to the non-Schengen Crown lounge as well with an incoming business ticket in case the flight is early?