>>The bad thing is that it doesn't have the option of blues/rock.<<
I wouldn't take that so literally - ok, a good pickup is a good pickup, but half of it is in your hands.
the 3rd section of that site shows you only the single coil pups for Strats.
[
www.seymourduncan.com]
Pickups for Strat True Single Coils
the best thing of course would be to hear and play them in person, but I suppose that's not possible for you, is it?
sorry, I can't give any better recommendations.
good luck