Should I level DoL classes to 50 before leveling my DoH Classes?

[Alx789]

There is one notable exception that I can think of off the top of my head though.
Shark Oil. >_<

Yes. This can be solved only when you will try to catch one of the first Big Fishes. Other ways are hard enough )
But it is a very few market positions.
Red Coral - too.
Later (3-4 star crafts) - Rough Ouster + Razor Calm ( less than lvl 20). I send retainer to catch.