Hello Brother
First of all I would not go further with this build. I would suggest you to save the money and go for an AMD build later.\
Secondly if you do want to upgrade, and concerned about the bottleneck issue , I am concerned if your CPU will work with the 1030, cz your CPU supports upto PCIe gen 2. Even if it did it'll get half the performance...Yeah so , not an option on upgrading your GPU , upgrade your CPU first