I have lived just off Caledonian Road for over 32 years now.
Probably the best thing to do is visit at different times of the day/night and have a walk around.
We do have a few problems with mini hoodies at times, but that's mainly on the Cally Road I think. No more than any other place.
One thing I do know and that is it's very central, good station nearby and plenty of buses!
Hope you get settled and good luck :)
and Zoopla is a good place to look to see if property in the area gets sold often or whether people stay in their houses for many years.