In reply to Tigger:
Yea, if its snow free a 30m single will do you fine. You may only want to use it on the first bit out of the starting gully and the onwards from the eastern traverse. 3 x 120 slings with screws, couple of big wires/hexes as engineer said is spot on. If you tuck in behind a guide you'll not get lost and keep good time too. Start early, it takes 2.5 hours to get to the foot of the starting gully.