PvE Server Pop/Raiding Q's

Hey guys, so me and ~5 buddies are currently leveling on the PvP server and it's pretty miserable leveling at points trying to tag mobs and such, although we do love the high pop it can get quite annoying. The main thing we enjoy here is the amount of players to recruit for a more 'hardcore' raiding guild in the sense of 3-4 raid nights per week and looking to clear AQ40/Naxx.
My main question is, are there enough solid level 60 players that we'd be able to recruit ~40 more people for a guild like this? We wouldn't want to waste our time rerolling here if we couldn't get a solid roster filled up.
Edit: Forgot to mention it'd be in US timezone
Thanks in advance!
My main question is, are there enough solid level 60 players that we'd be able to recruit ~40 more people for a guild like this? We wouldn't want to waste our time rerolling here if we couldn't get a solid roster filled up.
Edit: Forgot to mention it'd be in US timezone
Thanks in advance!