i went to edmonton couple years ago....
it's nice if it's your first time there, the scenery in banff is gorgeous!
lake louise is a nice stop - try the buffet in the hotel, it was really good... but it is expensive.. but worth it. Check out the glaciers etc. Don't have high hopes about West Ed Mall... i rather shop at metrotown than west ed. If you head south from edmonton you can go to the Royal Terrel? the dinosaur museum ...

Just stock up on lots of food for the drive, make stops, and drive safe!