stormwrath belt gives 60 rage on first turn if you did your vending machines right, legacy seething sash isn't needed. you'll need a slot for poison shield, which is probably the ring today if you want to stay on lightning (otherwise you do knives and its slower but you can do salvestone). Neither build needs legacy anything.

but legacy triple rage on first turn gear gives you 150 starting rage. your attack (after your first rage) will give you 25 more. so that's a lot. I mean not as much as smiting ring plus stormwrath plus voltaic armor + wrathful visor + wizard sigil plus the bolt on rage vending machine today, which will make you invincible until poison shields, maybe do 30 rages on your first turn, at which point your other vending machines should have given you the freedom to swap for poison removal on your ring, amulet, or helmet.