5-15 depending on how 'switched on' I feel at the time.
Paladin Tank, Shaman healer (was a monk, not enough healing), 5 hunters, 4 warriors and 4 elemental shamans.

The reception has been pretty positive except for a few rather vocal semi-afkers who do very little towards clearing the LFR instance.
If you are keen to start up LFR, do it asap after downtime. I find the better players do it real quick, leave it to a Monday and zzzzz. Nightmare material :P