I'm not sure what other pickups are viable on acoustics to try and capture the real sound. The one in my Taylor seems pretty good and it has some screws on the bridge to let you adjust it that I've not messed with.
That is a small guitar and must be fiddly to work on inside.
I bought a bunch of piezos to try as drum triggers. They are really cheap and seem to work with the unit I have to trigger samples. I need to make up some more.