The bomb arrow (BA) strat is optimally slightly faster, but it's very hard to control how many pieces of armor each BA knocks off the darknut (3, 2, or 1), so in practice it basically works out to be even with using sword. Equipping BA for the first darknut adds a half equip, so I decided it wasn't worth it, but I already have BA equipped for the second one. Also, the barrier around the second one is extremely laggy, so it's hard to do the sword strat without accidentally doing combos, and the lag kind of helps with the BA strat because it gives extra time to aim.
I like to imagine the reason why the treasure room has 1 of every type of rupee is because those are the MASTER rupees, used as references by the royal mint to make more of them.
It's funny that the only chest that has seeds in it is at the very end of the game when the slingshot is one of the first items you get in a Normal run
