Griffon with rainbow facet.
As lightning soso is very easy to stack enough mf (enigma + chance guards + war travelers + Gheed and you are already over 200, add few smc if you want ~300 and you dont need more) so everything else is to increase your killing speed (more kills = more drops = more gg items)
So Griffon with facet + mara + Hoto + 32+fcr Spirit + Arach + 2 Soj + the other 3 listed items with MF = about 200-300 mf + great killing speed + 117fcr + max or near max res (fix this with mf/res smc if needed).