Building a new system

I am trading in a laptop and about to get a PC. I have to use Windows. I am getting decent results with an AMD-10
8GB, 1tb 7200RPM laptop

However, it can’t keep up when I start loading on VST’s

So, I was looking at building a computer (possibly custom)

Not sure which route. AMD FX 8350 or Intel I7 (not sure which processor)

What are your guy’s thoughts? I would like to spend around 700.00 give or take. New or used, I’m not hung up on it

I know I would like 2TB, at least 16GB Ram, and top of the line processor. I just can’t have any more lagging