You can combine my script with more AviSynth-stuff... of course. But it's best to apply other stuff AFTER antialiasing it. So instead of putting return v3 at the end, it would be something like return v3.Levels(xxx).Tweak(xxx).Crop(xxx).LanczosResize(xxx) and so on.
Regarding LimitedSharpen, look into Zion's thread. I've posted everything you need in there.