If you're going with a bike lane strategy, this seems like the right approach, given that you aren't going to be able to retrofit the roads entirely. Intersections are obviously the weak point of segregating and need to be thought out as an integral part of the scheme.
Specifics--I don't think the staggered signaling "solves" the right hook issue unless there's absolutely no overlap between the bikes proceed green light and the cars proceed green light, and there's no turn on red. If both the bicyclist and the driver get to the intersection when it's green, they're both just as likely to go as they would be if the lights turned green simultaneously.
Honestly, if I was a cyclist and was told I needed to do the two step left turn and that involved two waits for the light to turn green, I'm probably going to cheat and try to take the vehicle lane to do the left turn in one step. I think the two step left turn is probably going to be obeyed just a tiny bit more often than the command to walk your bike at an intersection, and I have literally never seen anyone obey that sign anywhere.
I think Ottawa's on the right track here, but I'd bet on further refinements dealing with those issues.