In either case you have to apply for your spouse in family calss visa now and it will take about 12-16 months to get Visa for your spouse. So I think your decision should not be influenced by visa conditions
Processing time I told you was very generic. It takes about 13 months to process about 80% of the cases for all Visa offices.
To check the family class PR timelines visit the link. Some places like Nwe Delhi is doing it in 3-5 months
http://www.cic.gc.ca/english/information/times/international/05-fc-spouses.asp