Overdue: upgrading from El Cap

I have a hackintosh (specs below) that I built from TonyMac's instructions back in the day. I'd like to bring this up to High Sierra or Mojave to use the latest Xcode. (I've seen rumblings that the next/beta Xcode requires Mojave, but I don't think my video card is up to snuff.)

Can I upgrade this the normal way that I use with my MacBook Pro, which is via the App Store? Should I upgrade one level at a time, or can I skip?

I can't remember why I've waited; the perceived pain of the previous upgrade, or Model Identifier=MacPro 3,1 is maybe a limitation, or what.

Clover

Dual boot El Cap/Win 10

i5-2500K

Gigabyte z68xp-ud3 1.3

Radeon HD 6850 (Gigabyte GV-R685OC)

submitted by /u/1e6
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