Generally Stike Ninja decks rely heavily on traps and are more defensive than offensive. I would try using the Destiny Hero Engine for draw power and grave fuel. Throw in a few Dark Grepher as well. Also drop some offensive spells for defensive traps. Also, Compulsory Escape Device, like in Chain Beat can be used with Strike if I am not mistaken.
Junk, Monk, Reaper, and Scout are not really needed. Maybe 2 scout but I would not run more than 2.