Wayne thats great
I used to use Estes Rocket engines underneath my planes for some added speed boost lol back then I just used a servo and wired a 9 volt battery to set the ignighters off worked great but the switch system is much nicer, I'm also planning a surprize for my kadet at the club field either this Saturday or next Saturday depeneding on when I can get to the hobby store so it was funny to see the same idea to light the fuse just now,, what are the odds lol
anyway it looked great I was thinking maybe you could mount the smoker in a rocket tube and it should hold the heat nicely and not be as bulky. especially if you hot fuel proof the tube. but regardless thats awesome Good job.