Realistically speaking, yes, it'll likely run it fine, but on the low-mid GFX range. You can't upgrade to Catalina Anyway, so there's that out of the way. You Could install Win10 via Bootcamp as well if you wanted increased compatibility (less headache) and most of the 3rd party apps are Windows based. With a 1Tb drive, you could even Rebuild the system to run 1 copy of MacOS for non-gaming stuff and 1 copy for just CoX. Mac enthusiasts (the ones who know how to do it) are known for having a system running multiple copies of the OS. It takes learning, external drives, and patience, but it keeps your files separate from the gaming and allows you to wipe that partition whenever you want. No, I don't have a walkthrough. :/
Also...*smacks HS' hand* Bad, BAD @Hyperstrike:p