I'd go with drop spindles,you'll eventually end up hating drop springs,especially on Edmontons streets
The truck will wheel align to factory specs,and the ride will stay identical to stock,and you won't have a problem with bump steer issues.
And the biggest bonus,is they are far easier to install compared to springs,only downside is the front wheels will move out roughly 3/8" on each side.
If you've been out to Castrol much this year,mine is the lowered red shortbox regular cab that's been there,most Friday nights this year.
If you're down in this area,you're more then welcome to look at mine with dropped spindles.