For the last few toons ive created i take Biochem, Scavenging and Underworld Trade.
I stock up on bioanalysis mats on an alt or buy them off the gtn, and i use scav/uwt to send the mats to my cybertech so i can create armorings/mods for them, then i usually strip out enhancements from loot from FPs or get them from planetary comm vendors