Hey, @Czar i have some pictures to you explaining the nature gen store method.
Here you can see an example of two paths. One of them is faster than the other, but does not require anti-poison or food. I do have this method coded so if you want to take a look at it just messange me on skype. It is very important when using the green path, that it follows this exact path, else it might die. So therefore using the webwalker might not be the best idea, you might have to code the path yourself. Goodluck and your updates are always awesome
As for unoting the pure essence, have a look at this:
Some players use this store when crafting nature runes, since Jminua will unnote their pure essence for a small fee. From 2007 wiki page.