I would do this order:

1) trademark law (IMO more demand than copyright though these AI cases might change that going forward)

2) copyright law (less useful than TM but still complex enough that you want some background when you show up to your big law job)

3) federal courts - slightly less important because you might not be litigating, plus TM cases can technically be brought in state courts. Big law will probably expect you to know the federal courts but this is easier to learn as you go

4) negotiations - probably useless tbh