The only thing that will differ, Kitten, is the 6th herb you get from the second level of the faction
Nature's 6th herb is the Pitcher Plant. Any combo with that in it will be for Nature Faction.
I don't know the name of the Magic's 6th herb yet.
However, any combination with Black Orchid, Cactus, Lotus, Rose & Tiger Lily are the same for *everyone*
Food amounts have nothing to do with potions. If your potion blows up, try buying another level of Alchemy.