you can go with cheaper brands to make that build a few hundred cheaper, but that build is looking at about 8 grand or maybe a little more.
Dont get that head on ebay, you have the right idea, just need to get a fully assymbled head, its cheaper this way. I know a guy that will get you a GOOD head that is on honda-tech.com, but im not to sure he is still very active on there. Anyhow if you want me to hook you up with him, let me know. He is a little more expensive, but he is definently a trustworthy person. He doesnt sell screwed up heads and so forth. Anyhow let me know if you need to get intouch with him.