be able to make the crops with custom Seed/Wheat for it(Wheat as what the seed drop once fully grown like use a Custom item from this mod as a Wheat)
& they support mods with auto planeters/harvesters(like minefactory reloaded/EnderIO)

and turn off/on bonemeal use on them
and how fast they can grow

http://minecraft.curseforge.com/projects/kitchencraft

Sure. Use KitchenCraft to add the crops, and CustomThings to add the essence items.

is it possible to make a Kind of custom Magical crop out of this?
like the magical crop mod can grow diamonds essence(& 9x diamonds essence = 1x diamond)/other resources