I played a fighter-class archer till lv 12 in PFS. Here are somethings that might help you.
1) GET the Impervious weapon quality on your bow ASAP.
Its only +3000gp and don't take up a +1 cost slot on your bow.
Impervious makes your bow much more tougher and more importantly immune to the spell warp wood. It does not matter how powerful your bow is, if the enemy can shut you down with just one lv2 spell.
2) In addition to the Efficient Quiver, get a Handy Haversack. You will use a lot of arrows and 14 str will not be enough to carry them all. Get a HH and dump arrows into one of the side pockets in the HH. *Have craft arrows as a skill would help too.
3) Get weapon blanches and different arrow types. Get Blunt arrows to deal with skeletons and be able to deal non-lethal damage at range. Get alchemical arrows like Arrow (tangleshot) to slow enemies or Arrow (trip) to trip them. Weapon blanches are useful if you don't plan to pick up the clustered shot feat. Ghostsalt weapon blanch is a little ex, but is useful vs ghosts and other insubstantials.
3a) Buy Cold Iron arrows instead of normal arrows as your default arrows. CI arrows are CHEAP, they cos 2gp for 20, over 1 gp for 20 normal arrows. They work against demons, which are pretty common foes.
4) Consider not going with the Archer-archetype. The reason is the Archer archetype denies you access to Dueling Gloves, one of the best items for a fighter. To use Dueling Gloves, you need Weapon Training (Ex), which gets replaced by Expert Archer (Ex). Expert Archer (Ex) does not work with Dueling Gloves. (as per the FAQ.)
These are off my head. Hope this helps!