Carbon express makes several shafts in a "350" model. You can look up the grains per inch on their web site to calculate your total arrow weight from that including your vanes, inserts nock and point weight. Then take your approximate speed of your setup and figure your KE. The web site below has some fill-in questions to help you put the calculation together.
Once you have done this you pretty much have answered your question is your setup good enough for elk bowhunting.