First Build Guide - overkill?

Hi Guys (First post and not sure if in right spot)

I wanted tome professional opinions on a build that I'm getting ready to buy and wanted to see if the follow was a bit of an overkill for what I intend on using it for.

--> https://au.pcpartpicker.com/list/WRTYXP

Use

1) Gaming

I'd like a gaming set up which would include things such as Overwatch, WoW, CS:GO, Call of Duty however I don't have the intentions of going 4k yet but i would definitely want high FPS.

2) Video and Photo Editing

I'm starting to get into media more and will soon be purchasing a subscription to the Adobe CC for After effects and Premier.

I'm currently using Affinity Photo and Design for photo editing which has been working on my laptop but unfortunately my laptop gives false impressions on the colours.

3) typical office work

The boring stuff

Do you think the build list above is overkill?

and if you were to suggest a monitor under $400 what would you recommend?

Cheers lads

D