I'm not much of a USPSA guy these days, more of a 3 gunner. Personally, I'm using a DSG competition belt coupled with a Safariland ALS or GLS holster (depends on the gun I'm using at the time) and Blade-Tech mini-TMMS equipped tek-loks and mag pouches. For a 3 gun rig, where I've got a pistol, pistol mags, shot shells, and rifle mags, I like the added safety factor of a true buckle. The DSG belt is one of the few out there with a real buckle.
For USPSA, I'm using a Safariland ELS belt system. The holster varies depending on the gun that I'm shooting.
Ghost has been in the business for a while, and last I heard, was still well thought of. That setup should work just fine, if you like it. I would recommend going to a local club match and talking to the folks that are there shooting. You might even get a chance to try something there before you drop cash on it.