Any of the rifles you've listed will work fine given the right bullet.
I used to hunt with an outfitter in MT that used a 7MM-08. His theory was, in most cases it'll take more than one shot to put an elk down so he chose to have a caliber that he could get back on target as fast a possible and send another. He also didn't take shots over 200 yrds either.
I however, being the paying customer chose to use a 30-378 WBY with a 200grn Barns X and send it out to 500 yrds.
If I were in your shoes I'd use the 300WM if I were comfortable shooting it.
Good Luck with whatever you decide to take with you.
I used to hunt with an outfitter in MT that used a 7MM-08. His theory was, in most cases it'll take more than one shot to put an elk down so he chose to have a caliber that he could get back on target as fast a possible and send another. He also didn't take shots over 200 yrds either.
I however, being the paying customer chose to use a 30-378 WBY with a 200grn Barns X and send it out to 500 yrds.
If I were in your shoes I'd use the 300WM if I were comfortable shooting it.
Good Luck with whatever you decide to take with you.