Honestly, you're wasting your money. No matter what you buy, nothing will come even close to this $600 prebuilt on sale right now - https://computers.woot.com/offers/hp-omen-870-intel-gaming-desktops-19

And it's only $120 above your budget when you factor in the monitor, but the cost-to-performance is just insane when compared to the shitty ryzen 2400g whose gpu is on gt 1030/rx 550 level, just laughable. My advice is to buy it now and then save money for the monitor, cuz it's a damn good deal. I know you want to buy a pc now and $600 is your hard budget, but you're literally wasting this money if you buy a 2400g or w/e else you can manage when buying parts separately, for a $120 more your money will be twice as well spent, like I can't stress enough how much you're fucking yourself in the ass if you choose to buy it everything now because of impatience rather than get that sweet deal and then save another $120 for the monitor, even if it takes a month or two, I don't know your financial situation but if that's even remotely possible you will thank yourself later