One small note on the screen (especially wrt travel and/or OP's requirement for a good battery life): "worse" screens will often give significantly better battery life. I downgraded my 4K/60 to a 1080/60 on purpose and tripled my battery life on otherwise-identical specs (3 to 9 hours on two Razer Blade Stealth models).

Great points, though. Especially brightness -- even if you don't need all those nits for day-to-day use, they're great to have as an option when you do! Don't skimp on the screen specs that matter to you.