In your case, I'd only use the mining and hunter ones. To be more specific, you'll want to stock Mining juju potions, Scentless potions, Juju hunter potions, and Zamorak's favour. The mining is self-explanatory, and the 3 hunter potions are for catching draconics for hunter xp, which is more efficient than butterflies iirc, even when you factor in agility xp. (I also am not sure if the butterfly agility xp is affected by the Penance Horn or not, but if it isn't, there's another reason not to.) Also, if you decide to farm torstols for farming xp (isn't much compared to magics/palms/calquats, but still worth doing imo even if you ignore profits, because you can do so many per day), I'd still get juju farming pots, for as a "why the hell not" than anything else though. Plus, you'll probably have the ugunes planted anyway.