First Watercooling Build! What have I got wrong?

[tornado]

I am just looking at this and wondering if I should go for this https://www.overclockers.co.uk/acer...descreen-led-monitor-black-red-mo-065-ac.html for Gsync @ 4K. Or should I go for something superwide and slightly less than 4K, although with Gsync I think that would be even more expensive. Maybe questions for the Monitors forum... and perhaps for tomorrow morning! So nearly there though!