Help with DEX build Cleric optimization

[John of Arc]

Hello Pathfinder sages. I'm starting up a new campaign here and I'm going to be playing a sneaky cleric. I picked up the Rune and Trickery domains, and I'm using a bladed scarf. It's only a two man party, so the idea is to make a character who's a competent fighter and caster with some useful skills. We're at level 4 at the moment, and here's my build:

STR 13
DEX 16
CON 10
INT 13
WIS 16
CHA 12

Feats: Weapon Finesse, Agile Maneuvers, Weapon Focus Scarf

Basically, I want to be able to trip effectively and deal good (but not great) damage. The feats I'm looking at right now are Power Attack, Combat Expertise, Improved Trip, Spell Focus Conjuration and Augment Summoning. This isn't my final build or anything, its early enough in the campaign that we can reroll at will, but I need to finalize things soon. I get that my focus is pretty scattered, but as half of a two man party I need to be able to fill a lot of roles. The other member is a halfling summoner, so I won't be alone at the frontlines but I definitely need to contribute. Are my feat choices solid? Would I be better served ignoring Power Attack or Combat Expertise? Would it be better to trade out some of my current feats for other ones? Any advice would be greatly appreciated. Thanks!

[ZombieDeathray]

It would slow down your caster progression, but you might think about dipping a few levels Fighter (Lore Warden). Extra feats/BAB/Maneuver Mastery at lvl 3 to help with tripping. Extra INT based skills for utility.

[sunbeam]

I don't think you ever will be good with combat maneuvers. You don't have the bab, the feats to go too far down this path I think. For you to have any effectiveness doing it you are going to have to increase your size with a spell. And with your domains I'm not sure you have too many options.

You can always invest in UMD, but it is an investment.

You can definitely become a sneaky guys, but in your shoes I think I would emphasize being a pure caster over damage and combat maneuvers.

If you use Sacred Summons you could be an effective summoner. Put some Spell Focus feats in enchantment and you can get some mileage out of Command and the like.

Buffing is something you can do as well. But if you go caster I don't think you have enough feats to focus on more than one path as your major shtick.