newbie: precoded text and sound on jacket

Hi Im making a light up jacket and im thinking of using the lilypad arduino simple snap for lights, however, I would love to add a precoded text message send feature (maybe with a GPS tracker??) and sound. Im wondering if any boards do this and if so which ones would be best?

Thats gonna be an awful big chuck of Arduino & shields in that jacket!

Also powering it.....

For minimal features...

you could use a Pro-Mini and DFPlayer for the lights/audio stuff..

Not sure about the GPS stuff though.... I'd lookinto the antenna stuff first being stuffed inside a jacket of unknown material/thickness..