Howdy all. With some great advice from this forum I have managed to level 5 x druids to 100 and 5 x hunters to 100. I have 5 shammys at 90 and going to start my next group of 5 x warlocks this week. I have a couple of questions if I may.

1) Best way to gear up at 100? I started some heroics but gearing slowly until timewalker dungeons hit again currently 630ilvl. From what I can see pvp gear would be the fastest to get the ilvl up but I can't box in bgs?

2) What to do at 100? What do people do mainly? I mean wolrd pvp sounds fun but probally will get boring fast. Old Raiids I'm figuring would be the most fun but what raids can be done with 5 toons? Cata raids I can do with one 700ilvl toon, can MOP raids be done with only 5 toons? Any advice from people currently completing them would be great. Im assuming I should be able to hopefully complete 10man MOP raids once I get better gear but what about Garosh is that doable? Has anyone here done it with a 5man group?

3) Has anyone ran there 5 man groups to complete old raid achiements for mounts? As example the Firelands one that requires 5 for the domo achieve? Or even the red proto that needs 5 to do the spike achieve? Just seeing if it's doable before I attempt them.

Any advice from people that have done this for a while would be appreciated.