Awesome, thanks BigDave for the info.
Leads to a couple other questions:
1. If I want to get to ~70 CYA (using 70 as my goal with my new SWG - unless someone says I'm off there) I'll need ~50 lbs. of dichlor, sound right?
2. My plan was to use up what I had left from last year's dichlor to get it stabilized but if I'm right above I'll need to buy more. I'm OK doing that or can I buy straight up Cyanuric Acid and use that instead of dichlor for the stabilizer and go ahead and get the salt system running for the chlorine maintenance?