I've been doing roughly an hour a day on the pally/shammy team, for the Icecrown Daily route (1100g or so).

In the last couple of weeks, have not really played the mixed team all that much, but they'll be the next group to 80.
Playing them both because they were mostly mains at some point in the past, and for a 2nd team to do dailies.

Most likely I'll level the druids to 80 as well.
This team will be better once I have my IS set up the way I'd like.
The ground target spells and repeater region for heals will be very nice features.

Typically, when I'm into the game, I play way too much.
I work seasonally, so when I'm not working if I'm into the game...
Have had times where I wake up, play for 10 hrs, eat, play for 4-6 more hrs, sleep.
So maybe 100-120 hrs a week. And repeat for two to three weeks.

Other times like now, I doubt I'm playing more then 8 hrs a week.