Help finding a radiant cut

[Millennistar]

Now that I've found my dream diamond (yay!), I'm helping my best friend's BF select hers! She's looking for a radiant cut, at least 1 carat, with a halo setting. I need to confirm this, but I anticipate a total budget of about $5k. I understand that radiant cuts can be tricky, so I hoped fellow PS'er might be able to weigh in and provide some counsel through this process.

First of all, do you think this one is worth looking into further (i.e., getting an ASET)?

http://www.jamesallen.com/loose-diamonds/radiant-cut/1.01-carat-h-color-vs1-clarity-sku-270509