Playing another new character: Skeleton sun paladin and things are looking absolutely amazing. This is my first character with a shield and the damage output of shields seems to be better than on my average two-hander melee

Anyways, things got a bit fuzzy after some incredible weapon finds. First, I find a very nice tier 5 ONE-HANDED staff in the sandworm lair with very good bonuses. Then, after killing the queen and heading to golem graveyard I find a voratun greatmaul with 80-120 base power and great effects and bonuses.
I'm quessing that because I have already invested 9 talent points in shield skills (and because many sun paladin class skills revolve around taking advantage of shields) the voratun mace is off the table? But what about the one-handed stave, should I try my luck with it? I only have one generic point in weapon mastery that I can't remove, other two I still can.
I have raised strenght the most because I wanted to wear that sweet stralite armour but it's not unreasonably high and I have pumped magic and con too. My stats are 54/37/37 IIRC.