Hmmm, a elven arcane archer build. You have quickest time being a wizard than sorc with that. Also you could take ranger levels and take disable device through trait (so you can be trap disarmer and most rest is covered by ranger skill set and ranger features cover other needs for arcane archer). The three arcane caster levels is quite a limit to cross, I suggest you take the trait which gives you +1 or +2 caster level above your norm so long your HD is greater than normal caster level (to help with multi classing as caster as there is no practiced spellcaster feat in pathfinder).<br/><br/>I hope my advices in above are some use in chargen EFA :)