Guess it comes down to preference. I find W is actually easier to land given it's small hitbox and projectile speed, only times I've really missed is if I decide to try landing it at max range.
I don't see any substantial advantage going with Q at level 1. Like I said, low levels with low mvspd & atkspd(animation lock), there should be no problems landing W.
Though with the W nerfs, it's probably better to leave W at rank 2 now until you max Q.