LVL PUG to 6 for Second wind (nice heal).
LVL THM to 16 for Sacrifice (light heal and a regen effect), Resurrect (raise, revive, w/e you want to call it), Stygian spikes (recover MP when you get hit).
LVL CNJ to 4 just for Cure.

Then you can level LNC a bit more easier.
Idk if you posted this because your friand and you are both lvling lnc or just you. If both are leveling the same class try to convince your friend to lvl cnj or con, w/e is called now.