I also believe you would need to resit your trade exams.
The kids will be fine.
There are jobs in your trade but not masses of them so you will be up against people with the right credentials and with Canadian exp.
I would try to get 2 or 3 job offers before you came here,it can be a great move to come here if all your ducks are in a row ,but it can soon turn to an expensive nightmare if you do not have all your ducks in a row.
good luck and hope it works out for you