Doesn’t look like AS is giving you extra carry on allowance for the comfort seat.
https://www.alaskaair.com/content/tr...s/comfort-seat
”
Each guest is limited to only one carry-on item (not to exceed 22" x 14" x 9") plus one personal item (such as a purse, briefcase or laptop) regardless of how many seats are purchased.”
Do you have any items that qualify under their exception rules? E.g., can you stuff your items into coat pockets or into a pillow 
https://www.alaskaair.com/content/tr...age/exceptions