Quite nice! Your ideas are great. Sounds very John Williams-ish. My only real complaint is the mixing of the instruments (balancing the orchestra). What software are you using? If you want a nice, free, but quality orchestral plugin, try out Edirol Orchestral! It's got pretty great quality sampled instruments and their respective sections. If you've got the dough, I'd recommend something by Native Instruments in the Kontakt series or something like the Hans Zimmer collection (that is if you have an easy $2,000 - $4,000 sitting around). Otherwise, everything is sounding quite nice.