I made it!! It was an asbolutely stunning morning to summit: not a breath of wind, not a cloud in the sky, and in time to watch the sunrise.
We had a 1am start from Island Peak Base Camp (5,075m) and summited Island Peak (6,189m) at 5:30am. It was a totally amazing experience, the walk up the knife-sharp ridge to the summit, and the summiting experience itself, most memorable. But more on that later!