I'm working on a list, yet i havent played in a while and need need to know is this is legal, or just petty optimism.

The character, a WE Highborn, is going to be armed with the helm of the hunt, Diath's reaper, etc. but i need to know if he can choose the additional hand weapon so he can get a 3+ ( shield, LA, helm, hand weapon) save in combat, or if he can't because he has already chosen a weapon, diaths reaper.

thnx for taking the time to answer a nooblet's question.