Hammond & Bohm do full pedalboards with Midi if you want to play in church style.
Another option is get an old organ with full pedalboard and Midi that is in good working order, (Or at least has parts that are still available) as they are cheap as chips these days and you can stick your arranger on top. (There are plenty of pedal self-teaching books out there on eBay etc.)

Bill
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English Riviera:
Live entertainment, Real Ale, Great Scenery, Great Beaches, why would anyone want to live anywhere else (I�m definitely staying put).