Can I ask who your outfitter is? If they are booked that far out, it should be good.
I hunted Saskatchewan and shot a 174" at 35-40yds....with a 270wsm.
Then went to the upper Peace River bow hunting and needed the 270wsm.
A bit off topic, but since buying land in Iowa, I've said the only place I'd ever go and pay to hunt whitetails would be that Upper Peace River region in Alberta. I know it only 2 outfitters that cover hundreds of square miles of the most vast wilderness U can imagine....500-600acre canola fields.....absolutely amazing place. I was hunting late sept and was locked in on the 2 biggest typicals I've ever laid my eyes on...and I've seen some big typicals over the years.....they were running together with a couple other nice ones in a bachelor group....but I digress.
Take the rifle that u shoot the best....if it's a tie, take the clearest glass with the best low light picture.