RE: 1 Year to Proficient?
You can be a pro in 4 weeks......well plenty good to shoot a bear from a treestand.
11 months? no worries.
and I agree, use a gun if you want, you can probably bring both if you wanted too.
I've learned though you should probably have taken game before you book a hunt/use a weapon that has been untested......
ie have shot a deer with a bow before you book that big elk hunt with a bow out west.....etc...etc...or at least it would significantly help to have....