what type of fly line would everyone suggest for a sage slt rod?

I am basicaly going to use this rod for eveything from nymphing to big dryflys(hoppers & droppers rigs ) to smallmouth bass with small streamers. It dosnt seem like their is any do all tapers for meduim fast rods, if this was a fast rod I would pick up a GPX or Grand fly line and be done but I think those lines would be to heavy for the slt. What do you all think?