Let's make it clear about boss attack - in game the guide says 3k-3.05k for attack for stage 5 so having 3100 boss attack should be ok for stages 5 (just what I say)! Thing new players don't know is that other stats matter too so using psyches on your Starcross gear matters, mystic, crit, crit damage matter alot so recruiting for the only boss attack it is kinda stupid! Also, will mention if you don' have like 145% accuracy you will miss 1-4% in stages 5 (but that matters less)!