Chinook substitution?

Hi all. I'm hoping to brew my second all-grain batch Saturday, and I wanted to make it an Arrogant Bastard clone, but my LHBS is out of Chinook hops. Is there a decent substitution for it?

If not, does anyone have a (fairly simple) recipe that is comparable to the AB clone in taste/style? I'm looking for a good beer to keg--not too hoppy, but not too dark (I will have an oatmeal coffee stout in bottles by that time, too.)

Thanks!

I'd go with Columbus or Centennial. Not perfect, but you'll have a good brew.