If you can include B2P this way if you run out of yip scrolls u can use it for food supply as the peaches can heal 10hp each waterfiends are made of water thus 100% drop of water rune meaning no bone drops peaches heal 8
yeah that a good setup i like to killing them in the eeyrie or near the gorak and orcs so i dont need sara item use barrow gloves,snakeskin boots,ring of life/archer,accumulator
just follow toast's guide you might even be able to kill 2 with tortoise use armadyl gs and bandos pool for immunity( and the other good pools before you go)
i did barrows for most of my money when i was around 80-105 made great profit but i still reccomend you do it even though prices are extremely lower than before (5.5m for a g spear the days...)
id also use it on summoning or agility (for my purposes) and with the couple quests requiring high agility farming is easy to train and cheap too (or profitable with herbs) with apple seed, banana, acorns being extremely cheap
overgrown can be traded for 100 death runes also it is not a viable way for income at all cats are good for fly fishing though 100 death runesX300 (good enough estimate)=30k...