New Route?

I had always been happy with the choice of the Eurovelo 6. The idea of cycling across Europe appealed and the fact that the route followed two major rivers (the Loire and the Danube) would ensure that most of the route would be fairly flat. I didn't want any pesky hills getting in my way!

However, I have had second thoughts, after all I can cycle any way I want because I haven't got a plan other than my starting point as I have booked my flight to Nantes.

I started to think that the later sections of the route were more problematical:-
Hungary, Serbia, Bulgaria and Romania all have there own currency.
They are less likely to understand English.
The towns will be further apart and it will be more difficult to solve any maintenance problems and more difficult to get accommodation.
Also, it will be more difficult to get back from Constanta as there don't seem to be any direct flights back to the UK.

What else could I do?
I quite fancy following the Eurovelo 6 as far as Vienna and then turning right and riding down through Slovenia to Ljubljana, Trieste into Italy onwards through Venice, Bologna, Florence, Siena and on to Rome. Visiting all these places gives a diversion to Italy quite a 'wow' factor. The distances seem similar to the distance I would have gone to Constanta. The difference is that the route to Constanta is very flat and the route to Italy will be undulating to say the least.
The route through Italy would include sections of Eurovelo 9 (down through Slovenia), Eurovelo 8 (westward travel from Slovenia into Italy) and Eurovelo 7 (down from Northern Italy to Rome). Despite the new alternative being on Eurovelo routes I am struggling to find clear cycle routes on the Internet in the same way that there is special websites for Eurovelo 6 but not for these other routes and I can't find any dedicated maps or route books. That's something I will have to keep working on so that I can find the actual routes.
If it turns out to be too much I would have potential escape routes to fly home from Venice, Pisa or Rome, all airports will have regular direct flights back to the North West of England.

Not surprisingly I am really excited about the Slovenia and Italy option. Who wouldn't be excited at the prospect of visiting those fantastic cities and cycling in the Tuscany countryside in sunny June. I do need to do some more research about the cycle routes involved otherwise I would need to navigate myself and whilst the countryside might be lovely I wouldn't want to continually cycle on main roads. I'll start on the research. I would welcome any suggestions from anyone who has cycled in Slovenia and Italy and can help me pinpoint the Eurovelo 9, 8 and 7 routes.

I hope I manage to cycle long enough to get to the point that I actually get to Vienna so that this discussion actually means something.