In reply to shelagh23:
I think the SMC guide to Arran is out of print,however Scottish Rock Vol.1 by Gary Latter and the SMC Scottish Rock Climbs have excellent coverage.
Have a good trip,it's a great place,keep meaning to get back there myself!
In reply to shelagh23: If you can climb all the routes in the selective guides in one trip you will have been very lucky indeed. Midges and rain always thwarted me when I had the opportunuity. A Chir ridge is a good fun trip for a wet day though ;-)