1. Trade Zetts. I have him in our league too and it's nice having the FOW from a LW however his FOW were low when Datz was playing. I'd make the trade, get a younger player who like you said is guarenteed winger status next season. Plus I'd say Perry is the best RW to own in your format.
2. Assuming you mean Jeff Carter then I'd say no. But I'd keep Hall over Hemsky