Cushion Lovers - Thoughts on this cushion?

[kb1gra]

I have this on reserve at JA, and I think I really love it, but I'm curious to know from some cushion experts whether this is a good one.

http://www.jamesallen.com/loose-diamonds/cushion-cut/0.70-carat-j-color-vvs1-clarity-sku-186238

I know it's not a big stone, I am looking for something potentially for a halo, so the J color does concern me a bit, but I'm really liking the facet pattern.

Any help or alternative stones in the $2-3k range is definitely appreciated.