Hey Fran,
You might want to consider a Hammond XK-3c.
It's 5 lbs. less than your G-70, has 3 sets of physical Drawbars, 9-Upper, 9-Lower, 2-Pedal, "2" MIDI IN with a "THRU", Assignable controller for MIDI instrument: Upper 1,2,3, Lower 1,2, Pedal, on/off, Value knobs, Panel Control: Reverb, Manual bass, Split, User (pedal sustain), Demo. It has "73" Keys with Velocity (waterfall no less

) 6 more Reverb Modes than the C1, Pitch Bend, Modulation Wheel, (No USB) BUT a CompactFlash Card slot, etc., etc..
Oh, and you'll pay about $500.00 less.

But Hey! If you want a dual manual than I suppose the C1 is the way to go. >> We report, you decide..
Best,
Mike