So this is my current rig.

now this doesn't include any ssds or over clocks. I've got well over the amount of money for this but I'm exploring all options.
heres my debate, do I upgrade(CPU,VC,MB,SSD/STORAGE/FANS) OR do I find a pre built pc and upgrade the things I want. if I matched out the prices right for just upgrading the 5 things I said should be around $1,500 not including fans. but if I upgrade those things I feel like I mine as well just build a whole new PC. this pc is a gaming PC BTW. but I also want it to be lightening fast.
My pc is growing to be almost 4 years old and I think I need a upgrade a little bit. LMK you're thoughts below please.