For 1, 3 and 4 I use a Lowepro Lens Case 1W, all stored with the hood reversed (note that that's the old Lowepro version, but from the dimensions you should be able to find the current one). For the 70-200 II (and the similarly-sized 100-400 and 28-300), I use the Lowepro Lens Exchange 200 AW case - nice because it makes it easier to swap on and off a big lens.