How do you know you are ready to leave the training camp and go to Haven?
I've managed to get through Sparrow Camp twice safely. Once with a party, once alone.
Since its a point of "no return" I don't want to leave to early. I still only got the basic equipment, but its at level 9.
Haven is where the main game begins. Granted, I haven't started a new character since many of the more recent changes, but if you have proto gear near level 10, I'd say you should probably be good. I assume you also have an okay amount of crowns too, so getting newer gear shouldn't be too bad. Ask around too, alot of nice people are around may have some spare gear.
Best of luck!