Hi Paul, I have made that passage
twice in the 90Ďs around mid June.
Its good timing, just before the onset of the typhoon season as the first ones tend to recurve early before reaching the Philippines
and then sweep NE back towards Alaska
Both times we ended doing a modified Rhumb line for first half and then GC towards Juan de Fuca because of tropical depressions.
Hope you have a great trip and fair winds.