I'm back in business for next Saturday! Had no problems getting the repairs authorized (except for waiting a day longer than I planned). I'm also proud to announce I was right about a bearing going bad. Here's what was replaced:
1 - Timing belt tensioner pulley
2 - Timing belt idler pulley
3 - Serpenting belt tensioner pulley
4 - Timing belt
Hesitation upon throttle tip-in is gone. Now it's back to modding! (Or thinking about modding, anyway)