My cousin is a keyboard player....does 20-30 gigs a month. He’s mainly a nursing home/assisted living player....makes a good living.  
He lives near me.  He’s constantly doing gigs with an 88 key digital piano..drum machine and Harmonizer...plus otherr associated gear.  I’m suggesting gigging with less equipment.
I suggest an arranger.  That’s out.  Anything less than full hammered action won’t cut it.  He buys a $1,000 Casio(piano sort of) every other month.
Like my brother, my wife and many I know,; they aren’t into buttons...sliders etc....they want full hammered action.....just a simple piano.
I’m thinking my cousin could buy a good midi 88 key controller and an SD/40/90....preferably  something he could put a mic into,
The trick will be getting him to spend the time to learn buttons and sliders.
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