Shooting head systems are a bit of an acquired taste. I love 'em for northeast saltwater. However, I tried a SH system for smallies and bonefish and didn't like 'em and went back to WF fly lines. Anyway, I can't remember the brand of the heads and running lines I use but I'd imagine Sandfly's advice is good. My 10 WT rod uses a fast sink head about 25' that is about 375 grains(?). I love it for surf and jetty work and would never put a WF back on this rod.
Once you get used to the somewhat awkward loop to loop joint, you'll find SHs cast like a cannon and allow for great distance and windbreaking power. With respect to accuracy, they're not so hot in my experience.