I'm coming in on AA101 from LHR to JFK on Saturday, scheduled 13:25, then out AA2183 at 14:55. This will be business class/domestic first and I have Oneworld Emerald

Both are terminal 8. I'm travelling hand baggage only, and I know I need to clear immigration and customs. I don't (yet) have TTP status, so travelling on passport and ESTA (UK citizen).

This seems a little tight - it's all on one ticket so I'm not particularly concerned, but what can I expect on arrival? Will I have a fast track through immigration/customs, and is there anything specific I can do to speed myself through. I'm fairly well experienced in the automated entry machines at other airports in the US but have never been through JFK.

Any hints or tips welcome, thanks!