You practice a lot but your compound is your primary bow ? a 10 ring size group ? 55 pound recurve ?

IMO you're looking at spending a lot of time and money on a Grizzly hunt that is once in a lifetime to many people. Its also an animal that will kill you and your guide if it can - if any mistakes are made.

Be damn sure you can hit whatever you want to, whenever you want to or take the compound. Theres no room for error on planning a hunt like this.