
There are way too many variables and we don't know enough about your combination, and what your goals are to suggest anything more than the choices you have presented. It is like Gator and Vic said. Cyl pressure, compression ratio, gearing, converter, clutch, weight, rpm range play an important roll in what will work the best.
With your mentioned rpm range, I probably would tend to look at the smaller cam also, until you said the duration was the same. That tells me the cam guy listened to your specs, and has in mind filling the cylinders with the added lift at the same duration. Do some more research on valve springs. You just might find that the triple spring is a much better choice for valve control and harmonics than your dual spring. Just my opinion, with it and 2-bucks you can still buy a candy bar anywhere in this town.
