I'm planning on a tour this July, essentially 5 100k's in a row making a 6-day 350 mile (560 k) week with one off-day. It's sagged, but the crew will go on rain or shine. For luggage I'm planning a front bag and either a large saddle pack (prob Carradice or Minnehaha), or a set of smallish rear panniers. I'll need to carry weather gear and road equipment, but not extra clothing or a sleeping bag.
What's a good buy in raingear? Jacket, pants, possibly booties; dry/minimal leakage, ventilating, freedom of motion, light/easy to pack, decently rugged, possibly a hood on the jacket for when I get off the bike. I could see the need to live in them 8 hours a day, if the weather be really not good.
I'm asking you folks rather than the touring crowd, because 1) there's a decent amount of overlap, and 2) I'll use the same stuff when I kick off my brevet career. It's much more likely I'll go off on my own to ride long days than taking many more multi-day camping tours.