Have started the planning for my next Whistler trip, listen to what is being said.
A-Line is big, find a video of the Moonbootr on A-Line, it may provide perspective. GLC drops at the end is about 5-6 foot, all of it is rideable but not blind if you only ride here. Freight Train is a big jump line, cool to go watch the pros hitting it, Crab Apple is a step up from that.
But yes, these descents are longer amd bigger than anything we are used to here, 10-12 runs in a day and you are wrecked.
When is your trip? See if you can get a run down Top Of The World.
If the trail is marked double black or red, stay off of it, made that mistake once.