Please do post more info and pictures
I would use a power sander with 60-80 grit for prepping to glue. Taping off first of course.
The factory is in Belgium so probably far cheaper to ship to France than the USA. I will save the website though, so thanks for the link.
What part of France are you in? We just went Normandie for D-day, then to visit my wife's family in Figeac.