Longley Pass cornice size?

[snowgoat]

We have a permit up Bubbs creek for August 21-27 and are considering a route to Lake Reflection and up over Longley pass tp Cinder Col , sphinx pass and back to Roads end.
Wondering if anyone has any rescent info about the size of the cornice at Longley and the best route around it.
Also anything about the stream crossings at Bubbs and east creek would be helpful.
Most of us are pretty experienced but we will have 2 people who are advanced/intermediate in our group ( Low class 3 rock would be ok). Thanks very much.