Here`s something you might try:
When I was in college, I was being asked to do sit-in`s with local funk, rock, blues, and ska bands. A lot of people knew me as a bass guitarist, but were really egar to add a trombone to their horn section. Anyway, I was not a music major, but people kept handing me charts drawn out by the Alto Sax player. How was I going to read a different clef AND transpose at the same time? A friend of mine showed me a neat trick. Just replace the treble clef with a bass clef and add three flats to the key signature. Accidentals are a major pain, but with a few runthroughs (and a recording of the piece as reference) they become less of a problem. Find a chart of the alto sax part and give it a try. Be warned though, this was almost ten years ago, and my memory might not be accurate on this.
I may have totally misled you in this extremly long post 
Check with your band director or someone else with experience in transposition and alternate clefs.
