Your one year starts at successful completion of the upgrade checkride IIRC. With training delays and unreliable FO/AC pairings, you're signing up for a minimum of 2 years. I'd give it a lot of thought.
If you go through with it you'll fly with some cool captains. But I also caution that there are some captains that stay there because of life circumstances/problems, and can create a lot of drama for you. Best of luck.