Taking the musical plunge

Our band concert is next week, and the final rehearsal was last night.
It turns out we will be performing my piece after all. For the past two weeks, I'd seriously considered removing it from the program because I did not feel we were ready. I e-mailed our conductor (Bob) with these concerns, and Bob said he would let me be the one to decide.
Much to my surprise, the piece sounded much better last night. I went from being 99% sure we would NOT be performing it, to being 70% sure we can have it ready. That's quite a leap. I got a decent amount of positive feedback from fellow band members, so I took the plunge and told Bob to go ahead and put this piece in the lineup.
For those of you who are unfamiliar with the piece I'm talking about, here are the basics.
It's called As I Once Imagined. It's 67 measures long and is scored for the following instruments:

Flute
Bb clarinet
Oboe
Alto sax
Tenor sax
Bari sax
Bass clarinet
Bassoon
Trumpet
French horn
Euphonium
Trombone
Tuba
Marimba
Bass drum
Glockenspiel
Cymbal
Chimes
Rain Stick

It's gone through a lot of revision in the past couple years, and it appears that next week it will finally be performed. Wish me luck.
We've performed a few other things I've written; last summer we played a composition called Waiting In Violet, then there was a brass fanfare called Fanfare For A Moment, then there have also been smaller ensemble pieces (solo, duet, trio, quintet, etc).
Our band is a community ensemble, comprised of people of all ages. Members are from Hillsdale County and other parts of southern Michigan too. I play french horn in this group.
Our concert is next Tuesday (Feb 27th). I'll let you all know how things go.