You should have informed CIC that you got married back in 2008. Is your wife applying for her visit visa stating that she is married as well? If she doesn't, it would be misrepresentation. If she does and they look up your name, they might want you to explain to them why you didn't update your file.
Your wife staying in Canada as a visitor will not speed up your immigration application. Even if she gets a job and a work permit, it will not speed up your immigration application. If she gets a skilled job, you may qualify to apply for a TRV and open work permit as her spouse which would mean you can both move to Canada on the temporary permits but in all cases, you need to prove that you will leave Canada when your permits expire. What does your wife do for a job anyway?