Since you’re already happy using a Mac and you’re also using VE Pro, you could actually just stick with Mac as your control platform and build “farm” machines out of PC components as needed.
Now don’t get too surprised that when you build that farm machine, it will run circles around both your Macs combined. 
The main issue, though, is whether or not you’re really comfortable switching platforms. There will be other issues that pop up that you don’t expect, but then again, you’ll get a lot more bang for the buck. But again, if you’re already satisfied where you are now with Macs, the PC “farm” approach with VE Pro could be the most economical approach.
Good luck!!!