stealth heads on a 383?

So, I'm gonna be running an rpm intake, 800 cfm demon, and the cam has lift at .525 both sides. Cam quest software states that with stock hp heads with 2.08-1.78 valves it would make 447 hp and 467 ft.lb.s, 9.5:1 cr. Now, that's right in my target range for output, but I really wanted this build to be above and beyond the stuff I've done before, the price of the aluminum heads has me thinking long and hard about them. If the heads have a VE that matches the lift of the cam, and save me the time and cost of porting and flow bench an cc'ing, then I think they are just right for me, cause shaving 50, 75, 100 lb.s off the front of my dart would make a dramatic difference to me. But the main reason I chose this cam was because of the good bottom end, and if I'm going to stall airflow at low lift with the giant 2.14 intake valves then I'd be defeating my own purpose. I have been there before, put 340 j heads on a 318, the top end was awesome, but it needed 2500 stall to launch with any real force, and that was with a little 268 cam. Ouch. The same heads on my 371 were freakin awesome, cleaned up the valve guides and matched 'em, so... What will these heads do at low rpm with this cam? Will it be a dog around town? I don't want another 2 second 60 foot time. Know what I mean? I want some street aluminum heads is what I'm saying, I guess. But they don't really exist, huh?