The only real consideration is whether your inbound is on time. The MCT (based on the awareness most people sit in economy) at NRT for what you propose is fine and this being Japan they will be waiting at the air bridge for you to assist you getting to your onward connection. Happens every single day with many flights and people stuck in outbound immigration. Notable is this is a service which does not discriminate based on class of service at NRT.

If for whatever reason they do not get you to the next flight on time they will protect you to KIX on another flight whether from NRT or HND. Your connection is domestic which is easy for them to cover.

While risk of missing the connection exists for a few reasons they are mitigated, in my opinion, by this being a domestic leg to which you are connecting.

Also, Christmas is a busy day outbound transpac not inbound transpac so loads will be light at best.

My advice, make sure people on both AA and your onward carrier know your connection and it should be fine. Do not dawdle on the way to immigration and just hope the typically strong headwinds heading west across the Pacific are not too strong that day.