the main question , in my opinion is what kind of player do you want to be? i dont think i will ever find myself practicing arrpegios more then 15 minutes a day , altough i can freely play 4-5 hours in a day..
steve vai is a great player , but honestly if i could be him or jimmy page, believe me i would choose page....
i dont think it's worth to practice 10 hours a day, only to be like vai, because i know he's very fast and all that but by the end any player i know, that plays more then 5-6 years can play most of his stuff...
so my point is: dont destroy your life and health,(and you will if you'll play that much) just practice the way you like, and by the way you'll probably able to do all this stuff...

hope i make any sense...
peace out