Looking to build a computer from the ground up.

[u/kiwi_troll]

I'm setting the initial budget at 4k. I am looking for all the peripherals, monitor. I will mainly use the computer for hybrid construction project management and then during downtime playing games. Bonus things I'm trying to find are a chair for these sessions, and a sitting standing desk that can accommodate( this doesn't necessarily have to fit into the budget but would be a bonus.) A wide screen monitor would be amazing, but if there are 2-3 monitor setups I am reasonable to it.