I would say yes based on the numbers you reached alone. You have gotten better results than anyone expected. On the trick flows- were they ported or anything? I had trick flows (170cc) and always wondered how they would perform on my big c.i. I sold them cuz I never thought they would flow enough.
Next question:
What would you have done to my basic combo na differently? Larger cam? I don't see why you wouldn't have hit well over 500rwhp using the same mindset with mine.
I have 414c.i., afr 205's, edel victor j intake, 80mm Accufab TB, LT 1 7/8 accufabs, 42# inj, .586 lift cam, PMS programmer.