2.5-3, none of those climbs are that bad, They are more like long kickers than actual climbs.
This is the ride I did today:
http://app.strava.com/rides/9572362#
Mostly flat, but with one tough climb, this is one of my "flatter" rides. I would give it something around 3 on the climbing.
And then I would give this ride a 5:
http://app.strava.com/rides/5675976
I guess you could say that this is the benchmark for how I am rating the climbing.