870 stock options :)

Just bought a Remington 870, practically brand new, probably doesn't have 20 shots through it. Came with a 28" barrel, he put an 18.5" on it, Wilson Combat magazine extension, (installed by a local smith), wood grip/stock. As is, fits me just fine, the wife on the other hand...she's 4' 11", 'bout 100lbs. She has shot a 12 gauge before, not scared of it. I'm trying to figure the best way to fit us both. Better for me to adapt to a smaller gun than her to adapt to a bigger one, so first thought, cut down the stock to fit her and hope I'm fine with it. I found a 'traditional' re-coil absorbing stock, Blackhawk with adjustable 'pull'. I don't know how easy the adjustment is to go back and forth quickly, also don't know well it absorbs the 'kick', not super worried about the 'kick' except when we attend a class, then it'll matter! I've seen several tactical stocks, shock absorbing and quickly adjustable, the price range from about $90-$250, seems like a huge difference, hopefully someone can tell me why. I'm not real concerned with having a wood grip and black tactical stock, might actually look good, what do ya'll think?

Jeff, I agree with me adapting to a smaller gun than her adapting to a larger one. I'm ASSuming when you mention the M4 stock that you mean any 'tactical' style. Is your dislike subjective or objective? I've seen a 'traditional' style stock from Blackhawk that is recoil absorbing and adjustable, don't know how quickly the adjustment can be made. What I do know is that the gun as is, the stock needs to be shortened for her, she keeps catching the stock when bringing it up to her shoulder.