If you're going for black hats more than rank since 4K black hats is guaranteed event lt and rank always change after event finished, isn't better to have nŠutica and stamina lts even if not strong as damage or crit lts??
I mean, even if you're not going up to 4K, once you reach the amount you aiming it don't change like rank.
If, you are going for only 4K blackhat. then use Nautica.
but if your going to spend and going for the rank. kick nautical out and go for Crit damage and proc. Midas.. double the damage. if you use 160 staminas. and midas proc. its equivalent to 320 stamina's.
Lucas is actually quite good against bosses, I've found. When I'm boss hunting, I will use him and Overkill (and Duke--don't forget about him or at least Skull King), along with Alpha and Vanquish, and I hit thresholds awful fast.