Lightning Strike is a great spell to use as well as Second Wind, I haven't tried Bloodlust yet but it seems like something I'll definitely look into. Stoneskin really just provides you with a "Set" amount of additional hp equiviliant to a heal worth of protection. If you plan on curing yourself while in combat, precasting stone skin on yourself is a good idea just to save you the time later on. However if you are fighting mobs that are weak and allow you to just use Second Wind after the fight to top yourself off, then stone skin is definitely a waste of mp (Since most Archers don't have much MP to begin with, saving it all for Lightning Strike is probably the best idea. (Also if you do heal, make sure you use the macro to heal yourself rather than click the spell and target yourself normally. This saves you the time of pressing enter when you target yourself in combat) ex. /ac "Cure" <me>