i have a lvl30 cleric on the new server (icantheal) i cant really recall my exact stats (at school right now ^-^) but its something like +16str rest end i normally dont die unless i get attacked by 5 enemies at the same time
you should get 50+ on end and put the rest you get on str or spr. STR give more dmg but SPr give crit and more sp so you should maybe put on both STR and SPR