Well first do you live in Alberta so you can buy a resident tag? Any amount of money you spend there will be wasted. Don't get me wrong there may be one outfitter there that is straight or that will work hard to get you a sheep but it will be a 2 or 3 trip process if you are not lucky enough to get it on your first trip. Reasons are every resident hunter has a sheep tag in his pocket that costs 100 bucks over the counter. There is no bear hunting there so there are tons of grizz everywhere and finally the native population gets to hunt year round so the population is always getting pushed and hunted by something. I am 100% scared by Alberta and it is a money grab at best. Pay full price with no trophy fee and they have nothing to lose by riding you around on a horse, scaling mountains to glass and see nothing but ewes and lambs. I went last year so this wound is fresh in my mind.
If you do book you need to not be near a town or a reservation so there is no pressure from any two legged hunters then atleast you will only have to contend with the grizzly's. We were run out of two canyons by grizz and it is not fun! Message me if you want to know who I went with but I hunted the Willmore Wilderness Park.