BuckyGoldstein

76 Key with a Novation 61SL MkIII slaved into it.
I got the PA4x76 new for $2200 a couple years ago from Pro Audio Star.
Shure wireless SM58 plugged into the Mic input. It's got the entire TC-Helicon hardware suite built in. That should save you some money on vox hardware
There's a lot to the machine that doesn't meet the eye and Korg doesn't explain it. You can basically create any sound/effect you want and assign to presets and then assign to the 8 sliders. Pretty seamless while you're playing instead of going through menus.

Sorry I'm late
I use the Korg PA4X as a solo gigging musician.
It takes some time to get your songs together but once you have them to your liking and added to your songbook/setlists it's amazing.
Every style, effect, and aspect can be infinitely adjusted.
I slave midi controllers into it effectively giving me multiple keyboards using the Korg as the sound engine. It's like having a DAW without dragging a computer on stage