Wait, let me get this straight. You have a "Conda" and you haven't grasped trading affectively? Ok lets assume you've saved all that CR through hundreds of hours bounty hunting, id assume then that you have grasped combat even in the slightest. Not trying to be rude. Just wondering.
If in your shoes, which I don't plan to be ever. The conda is a lumbering oaf. Turn speed slow, boost speed slow, shields high, armor high.
So as a rule, I would consider turrets, they do less damage but technically they will be doing more overall damage over time, more time in crosshairs.
Google search elite dangerous trade guide there is a kind gent that made a nice app for BEGINNERS. It was great when I started playing this back in beta, though learning the markets and buying data is how you find those sweet trade routes. But most don't like putting the extra effort in to figure it out. Google wins again.