Thoughts on 3-night backpacking trip: Garibaldi Provincial Park

Anyone have any thoughts or personal experiences on this itinerary? Is it too ambitious or doable? Hiked Half Dome and Stawamus Chief before but both were day trips, this is our intro to backpacking.

Day 1 (Oct 9) 11:30PM Arrive at Parking lot, hike into Garibaldi Lake Campground

Day 2 (Oct 10) Hike to Panorama Ridge, and then up to Cheakamus Lake Campground

Day 3 (Oct 11) Hike up the Black Tusk and then sleep at Helm Creek Campground

Day 4 (Oct 12) Chill hike back from Helm creek to parking lot

I could see Day 2 being a bit of a time stretch given we'd probably be sleeping pretty late the night before. Should I just spend Day 2 at Helm Creek instead of Cheakamus? How difficult is the ascent up the Black Tusk after doing Panorama Ridge? I found that Half Dome was relatively comfortable and that was mid May so still had snow, so hoping I'm not pushing myself too hard with 2 peaks? Any thoughts here? Thanks!