I'm looking to build a pc that can handle everyday task but is fast. I will mostly be using the pc for gaming. I will need a monitor, keyboard, mouse, and headset.
PCPartPicker part list / Price breakdown by merchant
Or you could skimp out on the mouse and keyboard and get a better monitor
For goal of 144FPS you would want a better CPU so you would be basically shooting yourself in the foot since you will have a bad mouse and keyboard and won't be able to use the high refresh rate.