At that level, You'd want the essentials.
+1 Cloak of Resistance (1,000 gp)
+1 Adaptive Longbow (3,400 gp)
MWK: 300, Composite Longbow +0: 100, Adaptive: 1000, +1 Weapon: 2000
+1 Special Material Armor* (1,775 gp)
Ammunition.
*A Darkleaf Cloth Studded Leather armor with an Armor bonus of +3 and max Dex bonus of +7 would allow you to raise your Dex bonus without problem for a while. At level 8 you should have a Dex mod of +7 with Ability increase and Belt of Dexterity +2.
And since you have over 4,000 gold left, you could buy some of the other Big 6 items if you want to.
Belt of Dexterity +2 (4,000 gp)
Ring of Protection +1 (2,000 gp)
Amulet of Natural Armor +1 (2,000 gp)
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As for other things you can do with the 4325 gold you have left, here's a minor list of interesting items.
MWK Backpack (50 gp): +1 to str for carrying capacity. And you gotta have a place to carry all your items in.
Dull Gray Ioun Stone (50 gp): Works as a hands-free torch.
MWK Tools for your skills (around 50 gp each): Easy +2 to those skills which qualify.
MWK Buckler (155 gp): +1 to AC when you haven't used your bow yet.
Traveler's Any-Tool (250 gp): Can transform into any mundane tool and functions as MWK tools for most craft/profession skills. Great to have so you don't have to remember to take with you a grappling hook, pickaxe, hammer, scissors and shovel wherever you go.
Wand of CLW (750 gp): The ranger spell list has CLW on it, so you can use this wand without a UMD check.
Boots of the Cat (1,000 gp): Take minimum falling damage. Even a fall from 10,000 ft would only hurt you 20 dmg.
Efficient Quiver (1,800 gp): The solution to all your carrying capacity problems. Arrows, wands, bows, etc can be placed in it.
Special Ammunition:
Blunt Arrows (Arrows with Bludgeoning damage)
Durable Arrows (Arrows that won't break)
Tanglefoot (For special occasions)
Cold Iron (Pierce through DR/Cold Iron)
Durable Cold Iron Arrow x 20 (40 gp)
Blunt Arrow x 20 (2 gp)
Durable Arrow x 20 (20 gp)
Tanglefoot Arrow x 3 (60 gp)
Enemy struck takes -2 to attack, -4 penalty to Dex and can only move at half speed. If they fail the DC 10 Reflex save they're also stuck to the ground. Disappers after 2d4 rounds.