I was only lvl 50, when I did the first few quests on Makeb.
Helped A LOT to do it right now, when there's tons of people around to kill all those mobs and goons LOL
But, they are not that scary if you can keep the agro around 2-3 goons/beasts.
Often you'll see 2 lvl 51's at around 16K-17K.
Oh and the first few bosses will be around 40K
So be sure to have upgraded every little thing, that can be upgraded...