Our birthdays are in June . I am a permanent resident but we are not even sure if we want to live in Canada.. and this trip will be the decision one, so why spend money for residency if he doesn't like it here
He can try to apply for TRV if you are not sure if you and him want to live in Canada. (As a PR, if you choose to leave before you become a citizen, you will not be able to meet your RO and may eventually lost your PR status)
You can "invite" him to visit.
But your husband needs to show strong tie with his home country, strong financial and proof of returning after the short visit.
It's not easy to show strong tie since his family (you, his wife) is in canada.
BTW if you only want him to apply for TRV, this is NOT sponsorship. Take a look at the visitor section and see how people apply for vistior visa.
There is no "sponsorship" for visitor visa. Also, if you are not looking at sponsorship (applying PR for your husband) then living in Quebec or Ontario won't make much difference.