I gave a proposition of this
TRIP instead of Romania, the guy who wants to go to Romania wasn't happy as 70% of people voted for my idea.
I would leave them in Prague and be on my way back to UK, this is not the final thing. Its just a rough idea, any idea on where to go in Austria not too far away from the route would be nice!
Only like 10 hours from prague to Calais, I could do that in a day. Be on the fairy, get some rest and then straight home.
Edit
So in total I would have done around 6500km's in 2-3 weeks time, that's not that bad tbh.
I was thinking of getting the bike delivered to Poland one-way, as the trip would be boring due to me being in a rush. So the distance would drop to 4800km's.