I like the Super Victor or the HV1000 intake. can't go wrong with either of them in my book. Why not go ahead and get the AFR 227's?
Just remember after you get to a certain point in the chase for more HP. There just isn't much out of the box that will give you big increases without doing some port work. If you want some good port work send them to Self Racing in Durrant Ok. Just my $.02 worth.
Of course you know this or you wouldn't be getting port work done.
http://www.selfracing.com/heads.htm