Using one of the guides[1], I believe they have recommended parts lists, but you'll probably need a different audio card, or usb audio, if that isn't huge to you. Network support is another issue... only upgrade your OS and primary apps once a year, and plan ahead for it.

I'm probably just going to jump ship and go back to Windows or Linux for my next laptop... I'm running a 2014 rMBP for my laptop, I also have a windows desktop and a linux htpc. I find windows isn't so bad, when you install git for windows, you get most of the linux tools you're used to and even get a decent bash shell.

Don't bother with the linux subsystem for windows at this point, or the windows native docker... stick to the docker that uses linux containers if you're into that. I've also found that running a linux VM with samba shares and a couple ssh shells works nicely.. I can edit in windows, run in linux, and it just works.

If you're doing mac specific things that won't help, but the part guide should be an okay starting point... you won't get absolutely new hardware, but shouldn't be too horrible. As to the screens.. have you considered dual 4k displays?

[1] https://www.tonymacx86.com/buyersguide/october/2016/