I think a Payne 98 would be an excellent choice for your conditions. It's a crisp dry fly action 7' 4 weight.
I agree fully with this! I made a Payne 98 taper as my first bamboo rod and it's really great. It will cast a 4 a 3 and even a 2#!

I would also suggest a Cattenach Sir D 7' 4# if you like crisp actions.
Anyway your maker should advise you for the best and it's a good idea to try a few out before deciding.

Cheers

Moreno