Good advice above.
If the distance is not a problem,
Harv's Air is a real good place to go.
I'm renewing an old expired class one shortly
and it was almost worth the trip to MB
to get it done however, right now I am swamped with
other matters that put flying off the list of to do items.
There are very few aerobatic instructors in Canada
and those who get a Class 1, often seem to get it
because there is no one else around or they think
they can be one.
It's a far cry from other countries that don't have such a rating
and you don't get to teach aerobatics unless you have
earned some respect.
Back in the 90's I could not find an aerobatic aircraft in Canada to do
a ride, ended up borrowing an American registered decathalon
and did 2 rides at the same time in Ontario.
Now to wait for the snow to melt and the fabric aircraft can come
out of the hangars.
and, to build up that G tolerance again...
right now, its all gone...