to be honest, you don't see much of the sith on telos. if you had to fight a few of those assassins off then i would agree with you that nar shaddah would be best. but since you (apparently) escaped them i don't really see that as being a smart choice.
*spoilers* especially since after nar shaddah the hk 50's (as well as the other bounty hunters) are still hunting you. */spoilers*