Audya 38 lbs. G70, 46 lbs. I doubt that 8 lbs. is a dealbreaker. Especially with the Audya almost 20 lbs. heavier than the E50.

Don't forget, it is crazy to put a $5000 arranger in a soft bag. You are going to need to protect that degree of investment with something solid, and unfortunately, heavy (or at least, heavier than a soft bag). More weight.

BTW, when you bought that $16,000 organ, was there anything comparable at half the price?
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An arranger is just a tool. What matters is what you build with it..!