TBH the i5-2500 is only slightly behind the i7-2600 and should be able to cope with ocasional editing/3d, but if that is going to be your main focus get the i7-2600.
If your main focus is gaming and you lightly do video editing and 3d rendering - I would go for the i5-2500 + GTX 560.
If you enjoy gaming but want to focus more on video editing and 3d rendering - I would go for the i7-2600 + GTX 460.