Hammer let us all know how you get on with your Trial.
You're lucky in the fact that you get 45 days (in the U.S.) as elsewhere (AFAIK) there is nowhere near such a Trial period.

We had the system for barely a week - basically Wed to the next Monday.

The first few days were spent getting familiar with the system and setting it up - AND reading the Manual (I do recommend this) and then the gigs themselves at a variety of venues and audiences.

Arrive early and give yourself enough time to sound check - as you should on most gigs of course - and I would recommend walking round the back of the room/venue to hear how the sound "spreads" and see if you like what you hear.

Those first few days of getting to grips with the system are very important. You'll find yourself asking audiences about the sound (like we did) at different venues - it'll happen, trust me. Don't be afraid to put the Bose anywhere you like - optimal is as stated, behind you at least 7-8 feet, but many of the venues we play simply don't allow for this - it hasn't been an issue though, as for some reason you can hear everything clearly, even vocals (especially vocals) when your behind the system itself.

Good luck.