BootsnAll Insiders

fly into BA, arriving Oct 23 for 3 weeks and at the moment I'm thinking of having a few days there, catching a flight down to El Calafate for a bit of exploring of the park, glacier and surrounding area.

Fom there I'll fly back to BA and probably go up to Salta, possibly by train/bus and when there take the train to the clouds and explore around the area.
A few questionsL-

Any suggestions of "must do's" in BA other than the normal ones?

I'm thinking of having 5-7 days in and around El Calafate, would this be about right?

Also the journey from BA to Salta is this possibly by train/bus, how long would it roughly take and any places on route that I should take in?

Please if you're answering directly could you send the answer to leapinglee@yahoo.co.uk, I don't seem to be able to change my email address on bootsnall and so they have an old one I can't access!

Thanks