While it is important to have quality, lighter-weight gear….. it is also important not to obsess overly much about it. There is no 100% perfect gear solution. Remember, the Camino is not a backcountry hike. There may be some days you are cold, some days you are wet, and some days you are cold and wet….. and muddy. With basic gear and commonsense, you will live through it. You are never that far from “civilization”.
I use Keen mid-boots, not waterproof. They are lightweight, well-ventilated, supportive and protective, with a generous toe box. When they do get soaked, they dry relatively fast compared to heavier, waterproof boots. I replaced the insoles with Superfeet. I carry 2-3 pairs of quality socks and Vaseline. On a rainy day, I may wear liners, but usually not. I don't bother with gaiters. If my boots get wet, they can get stuffed with newspaper that night.
Just did an overnight canyon hike where I was hiking in the (very rocky) river 80% of the time (anywhere from ankle to neck deep) for 2 days, in my Keen boots, with backpack. No newspaper - primitive camping that night. No point in even putting on dry socks the second day. My boots fit well and I take care of my feet – no blisters, no problems.
I usually carry a trekking umbrella for sun and light to moderate rain.
http://www.golite.com/Chrome-Dome-Trekking-Umbrella-P928.aspx
I have a cheap campmor backpacker’s poncho for deluges.
http://www.campmor.com/outdoor/gear/Product___77706#
I don’t care if my arms/legs get wet, as long as my core and gear are dry and I have plenty of ventilation. Can’t stand sweating in rain gear (or in sunblock/hat - thank you umbrella!). And the poncho is multi-purpose – emergency shelter/blanket, ground cloth for picnics, drape for bunk privacy.
And I didn’t break the bank.
Anyway, everyone hikes/pilgrimages differently. You'll find what works for you. But don't get the impression from a gear-intense forum like this that you have to spend a ton of money and months of research and make the most perfect decisions or your Camino will be miserable/chronically uncomfortable/ruined.