No, average, lite, smaller is better, and no.....
We put the quad through its paces on the range one league night at BRRC. Well made, smooth and the gun is accurate with Lapua Super Club, but its really, really light. The synthetic stock "felt" like it weighed nothing. Trigger was acceptable, not measured, but thought to be about 3lbs.
As for scopes...smaller is better, because with any standard lenght scope, you'll have to dismount it (and thus re-zero) to swap barrels. The dedicated Burris quad-calibre scope is short enough to let you cantilever barrels in and out of the receiver without dismounting it.
My overall impression....not worth the msrp price. For the same prices as a Quad with 4 barrels, you could just about have 4 MarkII BVS in each calibre.
Now if you find one used for a good deal...buy it.