Might I second the suggestion of at least 3 levels in Zen Archer and the rest wherever you'd like (even Ranger)?
Zen Archer gets you Wis to hit and with a Guided weapon (RAW allows it to be applied to ranged weapons, check with DM first) you can get Wis to damage as well. This would allow you to forgoe strength for ranged attacks. If you wanted to use Dex as well that could still be a good choice to up your AC further and your saves. Another advantage of this build is the high unarmored AC.
Your melee damage would still suffer until you get an Agile or Guided melee weapon. Piranha Strike would still be a great feat choice.
You also wouldn't need to get natural attacks as you get Improved Unarmed Strike for free. You lose out on flurry of blows in melee but if you are only looking for single melee attacks and always threatening for AoOs then this is the way to go. Or, you know... just use your bow unless it is an AoO.
Plus, if you do go with Ranger your high Wis wont go to waste on spellcasting.