Your plan for killing the brothers is what I do, pray on Dh, Karil, and Ahrim then no pray the rest. At 58 prayer I average 1-2 doses of ppots used, but it does depend on who I get in the tunnels.. Otherwise I use 1 or 2 doses of ppots. I usually use about 5 monk fish tops per run, I once did a run with no food eaten, but that was luck. For your equipment, swap the obby cape for any god cape and use zammy or guthix book to boost ur mage attack bonus, also swap ur black gloves and get mystic gloves. Possibly get farseer helm? My set up is torags pl8 and legs, fury, guthx book, mystic hat, mystic boots, barrows gloves, and sara cape and blk dhide body and chaps, msb, rune arrows to kill Ahrim. NOTE: I am 58 prayer My procedure : I start off with Dh, kill him, end up with 35 prayer roughly Then I go to Karil, pray, kill with range. Then I go to Ahrim, which by then my prayer is gone so I use 1 dose of my ppot, then kill him. Then I use my melee def agaisnt Verac, Guthan and Torag and not use prayer. NOTE:This procedure uses 1 or 2 doses per run only if you get Torag, Guthan or Verac in the tunnel, otherwise you might have to use a full ppot or more. The ppot use also depends on how fast you can kill each person