I like the light side option myself. Hunter with a heart of gold, always telling the npc's to not tell anyone as it will ruin your rep.

When you travel back to imperial fleet trough the spaceport. You see some r2d2 type droids with flashpt quests. Pick up and head to the instance in the fleet. West end I believe.

A little hard to say as servers vary. But I would think the lvl 15 blues would have a market as leveling characters can't really get that stuff. Off the top of my head lvl one blue mats are 100 cred per, green mats about 10 to 15 credits each on my server. Try some blues at 600 and you should see good volume. Will be trying this myself later today.

Cover seems to be a bit bugged/laggy. Especially if its not keybound which I assume you have keybound as your into pvp. Has a tendency to screw up your globals.

At lvl 50 yes