#budget pc

only new parts I haven't installed is the new Ryzen 5 5600x CPU and Lian Li GALAHAD AIO 360 RGB 69.17 CFM Liquid CPU Cooler what else should i get to upgrade my budget pc? https://pcpartpicker.com/user/CreepperReaper/saved/Lf6Xbv

So I wanna build a new pc, I already have the GPU (gt1030) So I want a good base system that I can upgrade in the future and goes well with my GPU, would be good if under 300eur. I prefer ryzen but if it's necessary to go with intel to stay under the budget. But the most important requirement...