Area-51m R1, power supply and display upgrades?

Hey all gamers.

I got questions. 

I upgrage my alienware area 51m r1  cpu to i9 9900k

And wifi card to wifi 6 intel

I got 180w and 240w power supply  . Should  i need get 330w one. 

I gor rtx2070 now. 

Also if everyone  has tried  upgrade display  to  17.3" 3840×2160 eDP 40pin 4K LCD Screen form Dell Alienware 17 R3

With custom resulting  software. 

Done some mods  already.  Liquid  metal  cooling  and wireless  phone charger build in.also wil do front RGB  panel same as msi titan .