Hello,
I do not want to dissapoint you, but the offer is not too great. First of all, $6000/month is too too less for 27 Yrs of experience. It should be atleast 10K usd/month. Plus 60 hours/week is too high. One year probation is another point, it should be 3 months or so.

Housing is really really expensive here.

Now if you get the following on top your basic salary
*
* Housing allowance atleast 14000 QR/month or free housing
* Schooling for children - US/Canadian school ( 40k-50k/yr tuition fees @ American school)
* Interest free car loan
* Car allowance
* Moving expense from Canada (very important)
* Yearly air ticket for the whole family (upto 4 children-very important)
Then I would say, you can consider.

Also read the contract line by line in order to avoid future hassles.I just moved from Canada a month back and I have less than 1/3 of # years what you have, and based on my contract I came up with the above opinion.

Good luck. God bless Canada and Canadians. :)
Cheers