Should I upgrade my monitor or my gpu?

Knucklehead729

Honorable
Dec 30, 2013
51
0
10,630
https://pcpartpicker.com/list/vxdgWX My build

I am right now using my 49 inch 1080 p tv as my main monitor and then a 900p 20 inch monitor as my secondary display, i am wanting to get a good 24 inch monitor to use as my main monitor and move the tv to the living room.
Would you recommend me get the new monitor?
Or would you recommend me upgrade the gpu first?
I am ok with how my gpu is right now as I can run gta v on high settings at 60fps.