I would say power level biochem(buy mats of GTN) for reusable stims, adrenals and medpacks and keep UT and slicing so you can sell neural augmenters and mandalorian irons on gtn. Both are 8-10k each on my server and I would assume thats standard across all servers. Plus you can sell companion gifts and still get your lockboxes from other missions.
Eventually keep slicing and get diplomacy instead of UT than craft exotech stims.