One weather site that is worth a look is Gramet:
Form to request gramet aero
You put in the departure and arrival airports separated by an underline so in your case EBOS_EDDV, enter the departure time and flight level and it gives you a picture of the forecast for your route.
The data is taken from the GFS model and I have always found it to be pretty good.
Looking at the route and time you give, it looks OK and you even have a nice tail wind!
For icing forecasts, I use Jetplan
JetPlan.com Graphic Weather
Obviously, you need to review the forecasts as the time of your flight approaches.