Thought I should tell you all how it went
Thank you all for your help. I've been back for a while and thought I should update you on how things went
In the end I went with my Ecco shoes. Even though I tried hard, I wasn't able to find a good pair of boots in time. Since this was only gonna be short walk. (I went from Santiago to Finisterre) I thought I could make it work with the ones I got.
So, I chose the Ecco shoes with two pair of socks. One pair of cool max and one pair of medium cushioned smartwool. The first day I walked 23km and my feet felt fine. I stopped about 10 km in and put a small compeed pad on the side of my feet where I thought I felt something .. hmm.. better to be safe than sorry, right?
Second day was somewhat OK. I stopped about 10KM in to air and wiggle my feet, since I started to feel something on my right little toe. Just to make sure I put on a compeed pad. Over all it was OK and I only walked 16KM. The third day however, was when things went bad. I changed the compeed pad on my toe and put another one on the other side. There was a lot of pressure on my little toes. The walk was on rocky path and long downhill walking. The last bit really hurt but I stumbled on. When I stopped for the day after 29KMI had huge blisters on both toes and one on the side of my feet. Didn't matter that I had put compeed on since they had loosen. I punctured the blisters but that didn't help. The next morning they were back and just as big. I punctured them again, put compeed on and wrapped them with surgeon tape. I know compeed doesn't work once you already have blisters but I needed something to take the pressure off. I put my socks on and my feet in my shoes but realized right away that it wasn't gonna work. I couldn't even walk 10 meter in them. So I decided to take them off and walk in my flip flops. I had brought my beloved pair of crocs flip flops and they were great. Not the best thing to walk long distance in and in the end my feet hurt underneath, but they put me thru the last 18KM. Once I came back to Santiago I visited the small medical center that is situated right by the Pilgrims office. He injected disinfection solution into all three blisters. I was very grateful for their help.
So what did I learn from all this? Mediana, You need to do everything you can to avoid blisters! Cause once you have them you're doomed. I really don't know how other people keep on walking.
I think my biggest problem is that my feet swell up. I knew from the start that they would, its normal and whenever I spend time in warm climate my whole body swells up like a ballon. I just didn't know that they would swell up THAT much, specially since it wasn't warm outside.
So what can I do to avoid this in the future? I have no idea. I know I need to buy a new pair of shoes and I know now, that I need something with a thicker outer sole. I'm gonna walk again next year so I have some time, but where can find a pair that fits my very wide feet that swell 2 sizes when I walk? Someone recommended NB. I'm going to Seattle in August so hopefully I'll be able to try on a lot of shoes that aren't available here. I'll let you know how things go.