I wouldn't worry to much about only pulling 17inches of vacuum with those cams. Cams and cam timing can alter vacuum

As far as dyno numbers......... don't fall into the numbers game. Different dynos give different numbers and can be adjusted to whatever you want it to say. Just because someone on HT hit 250 hp with your same setup doesn't mean you will.

Get a damn 94+ dohc vtec distributor cap for starters.