First off good luck on runescrafting, herblore and prayer

I know soul split is great (im a tank ranger and have it and love it), and im going for 92 herblore after 88 summoning so i can have xtreme ranging potions. Cant wait for those and overloads would be awesome (im non melee so i wouldnt use overloads)
I know this is probably late but.. did you ever consider doing hunter instead? 99 in a month's time if you do red chins to 99.
plus you get 1.7m per hour with grenwall spikes so it would be over double nature running.