Thank you BigDave!

A) Good! At least my calculations are not off ;-)

1) I see. It's just that the NPC asks for CA not TA to be measured once the pool is started and recommends CA be kept between 80 and 120ppm.

2) Does that little amount of salt translate into huge amounts over several years? I'm not really sure how to calculate this and don't know if I should bother but I sure wouldn't want to see metals rusting around the pool... I just hope this isn't a bad tradeoff vs using Trichlor and having CYA steadily increasing over the years which in my case and in the past led to algae (as I assume chlorine levels couldn't keep up with high CYA) and to having to empty the pool at least partially. CYA does not evaporate right?

3) Great. I was wondering as I saw the post about running pools at high pH where dichlor is a source of chlorine never to be used. However I don't think I could easily run my pool at high pH since I have a heater that would perhaps (?) suffer from this.