hardwoods weigh much more, so I'd try to get a newer synthetic.
Not true. Factory synthetic stocks on most rifles and shotguns are the same weight and often heavier than a comparable wood stock. You don't get lighter synthetics until you get into the $600 custom rifle stocks made from Kevlar.
Same gun, the wood stock is 1/4 lb lighter than synthetic
I really want to like the Nova's. I've had a couple and really like the design. I think they may eventually prove to be the best pump design, but I'm just too used to the 870 so I sold mine. So far no pump made has proven to last longer than an 870.
Everything being equal the Nova is also the heaviest of all pumps which hurt handling for me. If I were new to shooting and starting on the Nova I'd probably like it more. It certainly has potential.