Thanks to the kindness and generosity of one of my local guitar shops, I was able to use a reamer for a much safer way to expand the hole in my Ibanez AW100 acoustic guitar. Stan was nice enough to let me come in during my lunch break to use his work bench and tools.
The reamer is tapered, so once I had the initial hole to the 1/2 inch mark, I then used a drill bit to make the entire hole a uniform half inch diameter. I then used a guitar cable through the hole to pull the end pin jack through. It worked well. Then I used a small Alan wrench to keep the end pin jack from spinning while I tightened the nut with a slim wrench.
The install went fine. When I got home I used some double sided tape to attach the piezo pick up under the bridge. After I try it, I may move it around to get a different sound from the piezo pick up. Once I find the best sound, I’ll hot glue it in there.