Hey, I'm currently living in Halifax, so I may be able to shed some light on that situation. Walking from Halifax to campus only takes 5-10 minutes (plus 5 to get to Psychology), whilst Hes East to campus is 10-15 mins (plus 5). Both have a bus going to and from campus, but the bus makes little difference in time from Halifax, and a lot of people cycle to and from Hes East.
As for community stuff, I've no idea what Goodricke is like, but from my experience, Halifax doesn't have much, less than the colleges on the main campus.
I think a bigger thing to consider is the type of accommodation you want, prices, catered or not etc. Just remember that both colleges are closer to campus than school was, and chances are that in the following years, you will live further from campus too