Starvid,
dual class fighter/clerics have been my favourite combo since the original BG. Recently I tried a beserker/cleric and think it's an even better combination, as the immunities the character gains when enraged make him/her almost unstoppable in melee for loss of some missile weapon ability..... so a perfect candidate for the sling of seeking
Usually I distribute the starting proficiencies as *** in flail, ** in single weapon style and * in sling.
Enrage and single weapon style give equivalent(or better) bonuses compared to most of the lower end shields, so I only give him specialist shields (like shield of balduran) later in the game.
After dual classing to a cleric I put proficiencies into mace, staff and other proficiencies to be fleshed out after the berserker side reactivates.
As crom faeyr doesn't become available until late in the game I usually don't put any *'s in hammer until spellhold or the underdark.
Good luck and have fun with whatever class you venture forth with.
Kez