I would recommend hard luggage if you can stretch to it. Panniers and top box. Also a tank bag, but not so massive it stops you seeing the clocks. If you can't stretch to hard stuff then use soft luggage. It will NOT be waterproof - pack any kit in plastic bags before packing! Pack light. Whatever you take reduce by half then again! Think about what you pack, seriously, if you are away for 7 days, then 7 of everything is a lot to carry. Pants, socks - yes, pack for every day, t shirts, wear at night then following day. Trousers - one pair of jeans or similar should do it - you will not need a dinner suit! Pack one pair of light shoes each. Sat-Nav is a bonus, if not make sure you have good maps and directions for specific hotels etc. 250-300 mile absolute max per day. Under 200 if you have the time. I recommend southern Germany, Austrian Tyrol or French Alps. Stop over midway and make one place a base wherever you decide to stop. Use Autobahns or Autoroutes to make up time, but stay off them if you can. I have masses of experience in touring Europe, if you need specifics give me a PM. As for the bike, if you are happy with it and your other half is OK then it will do the job. If not there is a lot of choice out there, but most bikes will do it come-what-may!