I'm glad you have that sorted out. That's the kind of thing that if you don't know about, will make you nuts. I'm not 100% sure but if those nozzles are even remotely close the the Holley anti pullover nozzles, .035 or maybe, maybe .037 is the max size you can get before the screw becomes the limit.
I'm thinking if you get the big nozzles and screws on there and get the primary side happy, then you are probably going to find you are correct that the doors are opening too late. When the throttle blades open the and the air doors open late, what pump shot you had to help cover some of the secondary opening is gone. If that makes sense.
BTW, what space(s) are you going to be at for the swap meet. If you are lucky, a very smart dude may come with me. Meeting him is a learning experience plus he's a very cool guy. I hope he goes with me and you get to meet him.