Love what your doing and cannot wait to see it finished!!! FF 09 is going to be sick if your thinking about making it out.
Personally, to have a little more room, you can build a 500hp 8000 rpm 302 motor for about $5000 including after market heads. You would need 93+ octane, though, with 13:1 compression. However, a decent bore and stroke and a turbo would put you in the same power range as this motor your building now, and it would have given slightly more engine bay room. 302's are under rated, but they can be made to kick arse with the right components. Their stock iron heads are what hurt them...