Holley shit, sorry. Yeah I wouln't pay that much for a head.
Find a used c5 head for about $650. Or buy a b16a head for about $350 and then buy ctr cams, they are better then itr cams for boost.
BTW ctr > itr >gsr > si.

Unless your going for peak hp out of your set-up and money isn't an issue I would just go with a b16a head w/ gsr cams