pattern advice: costume jackets for tweens/teens…

My daughter's dance school is doing a production of Wizard of Oz and they need jackets for 20 or so flying monkeys, girls ages 10-16. I plan on making them from lightweight twill and stencilling on the red/white parts with fabric paint rather than applique (since they will be viewed onstage and not up-close anyway). Should I use the Field Trip raglan and size up, or should I use the Nature Walk and modify it to a raglan sleeve? Any help appreciated!