You might help yourself get help if you add a bit more information about whether you currently do any travel that would let you accumulate miles and what you'd like to do with the miles (whether from travel or credit cards) once you get them.

Off the top of my head, it doesn't sound like the deal you posted is a very good one, but I'm not familiar with the aeroplan program and don't know what options Canadians have for credit cards and other ways of building miles and points.

If you can get a Starwood American Express card in Canada, lots of folks (including me) feel that it's the best single way of accumulating hotel points that are valuable in and of themselves and that also can be converted into miles on a number of airlines. You might use the Search function here on FT to try to find out more info about it.

In addition to Miles Buzz, you might look through the Other Credit Card forums and, if you mainly will fly on Air Canada, that airline's forum.

This can all be a bit daunting at first, but you're taking a good first step by posing your initial question.

Hope this helps!