Stock '69 318, t-quad vs q-jet vs holley vs edelbrock?

Factory cast 4bbl intakes work great. They are heavy, but work great. Other than that, a Weiand Action Plus is a great intake, and the edelbrock performer will work good too along with others.
As for carbs, I will say this: Get the one YOU feel most comfortable tuning and adjusting. Or, if you got a friend that is going to do the tuning, then get the one HE is most comfortable tuning. Nothing worse than having every Tom, Dick, and Harry tuning on your car and still not being happy.