Since it seams to like more carb, if going the avs route, i'd probably just step up to the 800, as long as the 1.75 bores will work with a little massaging. It might sound like a little much by most standards, but i think it would be tunable enough to give you the best of both worlds.
I would also endorse that. The AVS is very similar to the Thermoquad in that an engine can stand a larger CFM since they only allow what the engine demands.
