quiver tip depends on the flow where you are casting. It pays to carry a range with you. I normally use somewhere between 2oz and 6oz on the Middle Severn, depending on levels, flow etc. With a long hooklength some bites are wrap around, others are more subtle drop backs, hence the need to use as softer tip as possible. I use a semi fixed rig so most self hook.
I hook maggots directly onto Drennan Super Spades in sizes 12 to 20 depending on the number I’m hooking at once. Don’t be fooled, Super Spades are very strong hooks.
Again, with feeders I carry a range of sizes and weights to match my feeding and swim. The Drennan Vari-weights are very good for normal level conditions. The idea again being to use the lightest you can get away with, without the flow moving the feeder.