I invested a decent amount of money into a bench, pull-up bar, ez curl bar and dumbbells several years ago, but in sticking with it, I found that I got too strong for max. 65 lb dumbbells and 90 lbs on the EZ bar way too quickly. Now they collect dust as I go to a gym where I can move some real weight around.
I would go with Weeden because the pats have given up a ton of passing yards this year. BUT I don't think I would play Witten. The Pats like to take away the player that they view as the biggest threat on D and I think they're going to choose Witten.