Uhm, Stay 1 def till about 60 attk and 60-70 str. DO ALL QUESTS THAT YOU NEED TO DO THAT GIVE DEF XP FIRST, then once your done quest finish getting to 45 def.
Get 52 prayer later on, and Id say 70+ range and mage.
there is wat you should do to become BEST at being zerker, 60 at 31 pray 40-45 def, 90+ str, i RAPE the wildy with mine, wit 31 pray no more is needed unless you go member,
Whatever you do. Don't train defence untill you have 'barrow' gloves and completed Monkey Madness, Dragon Slayer.
Same with Pray, don't train to your desired levels untill you have finished questing.
45 defence (MUST..thats the whole point
60 att at least..I prefer 70
80+ str..to be very good..75 is ok...70 at least
70+ range (i would make it 80..and also ger ranger viod set)
60 at least (god capes..sara strike..claws of guth..flame of zammy..85 would be really helpful..94 would be AWESOME)