Not having done it myself (Kids, wife or the trip north
) im probably not all that qualified to help much. But I did come into aviation late in life, and had/have to make choices to stay locally for other reasons which has/will limit my earning potential for a few years at least .
Speaking to friends who made the trip north and got jobs, being there full time was a bonus, but as was stated earlier, being an old fella will be a tick for you I would think, as many operators will know you have commitments other than chasing tail on a friday night.
You could possibly do an initial meet and greet trip, and then if you get any bites at all, head up for a few months during the hiring season. My guess is that doing all this before the little tacker goes to school would be the best??
Good luck.