EV8 is supposed to take you from Cádiz (Spain) to Athens (Greece) and Cyprus for a total of 5900 km approx.
I'm afraid that most of the route is based on normal roads, eventually quite trafficated.
For sure I wonder which way you're chased to follow to reach Milano .
Last year I undertook EV6 from the Atlantic (Loire Atlantique) to Budapest for a total of 3000 km. Frankly quite a pleasant trip that, this year (perhaps end of August), I'll continue on the other side in the direction of Black Sea crossing Hungary, Croatia, Serbia, Romania, Bulgaria, Ukraine and Moldova.
I'm still looking for someone interested to share this experience with me.
For any information on EV6 I'd be pretty pleased to be of any possible support.

Corrado