I agree with cdmerrit's advice but I went option 1 and use sword and board.
Your damage with S&B weapons won't be spectacular but you can count on
vorpals, stat damagers and other insta-kill weapons (and greensteel later on).
Instead you will be most damaging with your spells. Heightened, empowered (or maximised)
Blade barrier with a potency item will do massive damage - particularly on crits.
One tip with BB is to kite mobs so that they run in circles along the edges of the barriers for
mulitple hits in the space of a few seconds.
Playing a melee/caster/healing cleric can be one of the hardest styles to play - especially to do
all 3 at the same time effectively..
As a new player 18 is really expensive on any stat and I've found base 16 is pretty effective
even at high levels. It's the difference of +1 DC from wis 16.
You may want to try squeeze khopesh into your feat lists at a later time. If you stay pure cleric (as I did) then Longswords are available to you with a cleric enhancement. I would forget the maces
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