Sith Sizzle, I personally recommend going to Korriban last in your planet list. You have to go to Korriban to get to M4-78 and you'll probably want to have all of the crew - particularly the droids - unlocked when you land on M4-78. It's not a requirement by any means but having all of the droids gives you 3 possible ways of going about the initial potion of the mod.
Those wishing to contact me, please do so using Deadly Stream's PM system. I am rarely on this site anymore.
Considering trying out (or returning to) SWTOR? You may as well go through my link
and help get me some SWTOR referral points!