If you're in really desperate need of credits you can ignore this thread right now.
But my thinking is that whatever crafting you're doing now will eventually become viable. If you drop everything for Biochem right now, there's a good chance that will be nerfed and you have to max everything again to the next crew skill flavor of the month etc, etc.
I'm crafting carefully - just so much that I don't go broke, that I can outfit myself and my alts and maybe sell something useful on the GTN. This is an evolving game .. good things will come .. I hope.