Stefan Krotov said:
I have a friend who can sell me a monitor at the store. Would you recommend what resolution monitor better to have for that build that u gave me?
For that particular build I'd say 1080p or at a stretch 1440p. For 1440p though, you may want to increase your budget slightly to upgrade the GPU.
You could also use a previous version of the intel core i5 (like the 3570k) to save some money, but I would use the one in that build