If you have some good defense against attacks you don't need that much life pots, like maybe an inventory full would be good. Since you use a lot of mana I'll say the 3 bags you can use for mana unless you want a few drops.
But it really depends on your race, the ranking of buffs, and very good armor.
Since my knight (lvl 30) has more defense then my lvl 40 sorc, my sorc gets more dmg from mobs but my knight get's only 4 - 13 dmg from lvl 30 and lvl 32 mobs ( Those are the mobs I tested with ). My sorc only had 1 buff skill maxed, then I read all of the buffs skills closely to see that I didn't get the good buffs that I were supposed to get.
Sorry for this being so long. I have more info to give you but I don't want you to get bored or anything lol.