In reply to Jackspratt:
There is one main ice pitch (2). Two screws is a little light but also probably OK depending how bold / confident / experienced you are. Even if you had more I doubt you'd place more than 3 - 4 on the pitch, but you may need some to belay from too. The pitch before may sometimes be ice I think, the belay after the crux can be in snow (T axe) late season with no rock / ice gear.
The other (0-3) pitches (depending how you play it) are much easier and didn't need screws when I did it and neither did the belays. I seem to remember the belay at the end of pitch 1 was a bit problematic (seem to remember warthog + deadman + something else) and could possibly be ice gear in some conditions I reckon, which could complicate matters if you need to place screws for the next pitch (2) - you could use v threads but learning the technique on a busy route on your first grade III ice route my not be ideal. Overall I think carrying more than 5 or so screws up the climb would be overkill, 2 maybe be ok but it will likely feel a little bold and may cause some hassle if you need to belay in ice (others may be able to say for sure if that belay can sometime be ice)
You might want to watch being in observatory gully approaching the climb when the avalanche is considerable or higher on that aspect IMO.
Post edited at 13:57