I think you will be most happy with a converted MTB. What size is your Novarra? Consider getting a longer seatpost to put your B-17 on AND then go on the Rivbike site and order some bars and a tall stem with the "proper" length. Ride that a bunch and plan your next bike.
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I don't do: disks, tubeless, e-shifting, or bead head nymphs. But I do hate all e-bikes.