14 stories of underground parking that will be included, which does seem excessive given that the SkyTrain is literally across the street.
I'm not sure what the skytrain being there in a literal sense makes as a difference, but the absolute lack of parking at or around the skytrain stop would definitely not help the situation, suggesting that 14 levels may be the best way of achieving 2400 parking spots. Tall buildings hold a lot of people.
But what do your engineering numbers say?