What equipment are there in the later stage of photography?

In your business scope, a piece of 12G memory, 2T hard disk, i7 quad-core processor and a professional graphics card are enough.

In terms of software, if you want to do some AE effects, you can choose AE CS5 and above, because AE and PRO are compatible with each other, after all, they are two supporting systems.

However, PRO files often crash, which is not as good as Vegas, so your AE effect will be rendered in Vegas, but Vegas is not easy to crash than PRO, and there is a cache. Reopening the crashed file can restore the file before the crash, but it doesn't always work.

Anyway, pure editing, color matching and soundtrack, I recommend Vegas!