I've been running without an oil cooler for a year now and I'm fbo with meth.
I go to the drag strip about 6 times a year and my oil temps never touch 260.
Now if I was going to track the car that would be another story and I'd shell out the $1k for a cooler. But living in the northeast, the temps are only bad here for about 3 months a year.
And being that the OP lives in Vancouver I am pretty confident he can get away without an oil cooler with no problem.