The game is in beta. It's probably more a driver or game issue more than a PC issue. Will you have a "bottleneck" somewhere? Probably. Are any of your parts severely negatively impacting the performance of your PC? Probably not.
Your CPU is fine. Don't spend $250 taking a side-step. If you insist on spending hundreds of dollars getting <10 extra fps in a beta game, go with an i5-2500k. But overall your rig looks decently balanced. Check for new drivers and if there are any known issues with the beta.