I'd suggest taking a few levels as a Transmuter instead of a general wizard. For this sort of character, I'd focus on magic which enhances the caster's abilities rather than harming his enemies; especially since his Int and feat selection don't set him up as damage dealing spell powerhouse.
Jump, Feather Fall and Spider Climb work well in woodland environments, especially in conjunction with the ranger's hide and move silently abilities. Cat's Grace is always usefull for an archer too.
From Magic of Faerun, I'd suggest Kaupaer's Skittish Nerves; a 1st level trans spell which gives a +5 bonus on initiative checks. Also from MoF; the Scent spell. 2nd level trans spell which grants the Scent ability, which is usefull in conjunction with the ranger's tracking ability.
From Spells and Spellcraft, two which spring to mind are Slipping the Ranks, a 2nd level transmutation spell that allows you to make a 10' teleportation instead of a 5' step without provoking an AoO. Another 2nd level transmutation spell from the same source is Vigilant Guardians. This spell causes up to size small weapons to hover near you (1/level max 5). Daggers work well for this. They threaten as a reach weapon within a distance equal to their range increment, and attacks using your ranged attack bonus if anything in that area threatens an AoO.