Having, never shot or hunted or seen an eelk, I will throw in my two cents.
The more money you spend on new fancy gear for this elk hunt, the longer you'll have to save until the next hunt.
I think anything you choose will be fine. I shoot 23/64" Doug Fir, and I would have no reservation using them on anythign in NA .... with the appropriate bow obviously. I've also shot the ultra skinny carbons and they're cool too. I mainly stopped because they're more of a pain to pull from targets with my sausage fingers.