Picked up a peak lapel single button tux jacket from the Salvation army for 3 bucks yesterday. Going to see how it looks cropping it into an eton/dress mess style jacket. Might have to stay with cloth buttons at the moment unless I can find some silver/nickle/pewter etc buttons locally.

This is going to be worn at my Shrine's unit ball with my freemason kilt and shrine fez.

Any suggestions for determining the length of the jacket? I'm using my coast guard wind breaker which is bomber length as a rough guide. Thanks.