realskiers

Giorgio:

You are starting in the right place in getting boots before all else.  I would recommend http://www.bootfitters.com or Harb Ski Systems http://www.harbskisystems.com as excellent starting points for getting boots properly fitted.  The mismatched foot sizes are going to be a challenge, since you want a fairly snug fit on both feet.  Be honest with the bootfitter about all the information you just described.  It would probably be a good idea also to ask the tech whether they have been certified by http://www.masterfituniversity.com or ask whom in their shop has attended.  I think certification is required to be listed on the bootfitters site, but not everyone working in the shop has been certified.  Try to find a time when the normal shop isn't busy.