med, i personaly am not convinced that sending tons of supporting documents would make any differnce, i dont think they actually read them all,it is essential to prove you and your wife are in contact,but sending loads of papers doesnt make any difference,there is no harm in sending alot of supporting documents but you really should only send the essentials, i know 2 couples who barely sent anything and stll managed to get the PR in 4 months,but this was in damascus(however iam trying to send new photos and proof of contact),btw my wife spoke with an immigration lawyer who told her that each visa office judge based on whats normal in the country your from, thats why the refusal rates in islamabad are very high and in damascus for example they are low.
you have nothing to worry about your are LEGALLY married,the IO might refuse your application(la samah allah) but you can appeal his decession and iam 100% sure you will be cleared to enter canada,this is your wife's basic right and aslong as your relation is true and you did not lie in the application,in the end you will be allowed to enter,but we always hope to get it in the fastest way..
wish you all the luck