I would always go for boots, no question about it. Going down steep mountain tracks litteres with rocks means you need good support for your ankles - if nothing else it can help offset the possibility of tendonitis which is hell! Also, if tendonitis does develop and you need to keep walking (like i did last year..not enough preparation beforehand!) the support will help ease the pain.
I would NOT use gore-tex lined boots because gore tex (or similar materials) is basically a PVU membrane with tiny holes in it. The holes allow water vapour (sweat) out but dont allow the bigger drops of water (rain etc) in. This is fine until the material gets dirty and the holes become clogged. After that it's just a plastic bag...no breathability and the possibility of letting water seep in. This is why such materials need to be properly and specially cleaned (ie using proper technical wash or pure soap flakes...NEVER normal detergents).
On a jacket this isnt so much of a problem but when your boots are caked in fine dust (and they will be!) the breathbility of gore tex goes out the window. Leather boots these days are light and highly technical bits of kit - leather is naturally breathable and waterproof...just make sure you dry brush your boots off well when you finally stop for the day and then rinse them off in cold water..but dont soak them. Works for me!
Finally the socks..very personal preference. I tried bridgedales (wool socks, not very comfy I found) 1000 mile twin layer socks (ok but not good enough for the camino in my opinion) and Smartwool...awesome. With or without liners. I do use liners sometimes as well - especially if its very hot. I swear by smartwool walking socks now, wont use anything else. They didnt flatten or pinch - just great socks and heaven for my feet

"The journey of a thousand miles starts with..." Discuss.