If you want to take a shield, don't take a buckler. Rather taking around 75 wpf for the saidearm, a short sword, and a decent shield than a random 1 slot weap and a shit shield without any cover plus that will break after 1 hit of an axe. Furthermore, if you want a shield, forget IF: a shield skill point is way more precious than 2 hp, even if IF saves you after 4 IF points dropped on your stats. Go for 4/6 shield skill points for a decent resistance at melee, otherwise, you'll probably see your shield break a lot, and therefore die after 5 secs. For the wpf in xbow, just remember to use a decent armor (10 weight max for the body, and less than 1,5 for the head), since you don't have any penalty of PD/PT. 165/155 in crossbow is viable when talking about accuracy if you got looms, if not, go for like 60 wpf in 1h, and the rest in crossbow.