60# or so braid for baitcaster, nothing to do with the size of the fish. What lures are you throwing? This answers the question. Since you’re in Alberta I’ll assume you may use bigger lures for trophy caliber fish.
Case in point, I’m really a mono guy too. 20# on the baitcasters for bigger baits, think mepps musky killers, 1oz daredevles. 12# on a spinning reel for 3/8-5/8oz crankbaits.
Now I tried braid, hated it, gave up, but recently came back a bit. First real year in Canada, think it was 30# braid. small backlash, line broke, and watched my $15 bucktail keep sailing on. double damage because that lure was actually catching fish
Fast forward to the last two years. I got a reel for musky and put 80# powerpro. While this is overkill for pike I can throw some heavy baits without fear of losing them. Also good points about thicker line being easier to fix backlashes.