I traded with my cobra until I could afford the t6 with the a class fsd, and started trading with that. kept the cobra, and not too long I had a t6 for trading , cobra for exploring, and viper for bounty hunting, all upgraded with class a modules (except the t6, kept some d class for jump range)
Fun tidbit if you trade in open: I like to carry a mine launcher on my t6, then when I find the actual pirate (not silly rabid dogs who just pew pew people who cant defend themselves), who asks for a bit of cargo, I like to drop a few mines with it, just to make it that much harder for them as I fly away unscathed. I carry a cargo scanner also, and scan them as they scan me. No point dropping 20t of cargo when they can only carry 10.