PFA engineering, or your PFA inspector will be able to tell you what you need to do to operate your aircraft on Mogas, there are a few things to check, but its all quite simple. Why not speak to the Europe factorty too. As you have a Subaru engine, surely that is designed to use Mogas and not Avgas, just like Rotax engines that are only really approved by Rotax for running on Mogas.
There have been problems with Avgas eating away at fuel pipes, tank seals etc, but this is mostly a problem for older aircraft, with approved "aviation standard" hoses. As your aircraft was built on a PFA system, most likely "aviation Standard" hozes werent used, but rather automotive ones, probably of a lot better quality and made for Mogas use. I am sure that Europa fuel tanks will be perfectly happy with Mogas.
Mogas and Avgas can be mixed freely, so no problem filling up at airfields with Avgas when you need to, but putting in Mogas from cans at your home base or whatever you like.
There are the restrictions on tank operating temperature and some aircraft need to have a fuel return line from the carb to the tank (Rotax 582, I know of) I think this helps in reducing vapour lock problems. Again PFA engineering will be able to tell you.
Ive operated my Cub on both and dont notice any difference, ecxept I get less lead deposits on the plug with Mogas. The worst thing about Mogas is the smell!