Writing this post to share my experiences and hopefully help someone who is about to start the same or a similar journey.

My goals

I rolled horde on a non-PVP server, since for me, the cons of world PVP doesn't outweigh the pros. I started my multiboxing team for the following reasons:

- I wanted to get my main to level 60
- I wanted to level in instances on my own
- I wanted a team to help support the pre-raid BIS process for my main, so I wouldn't have to rely on PUGs
- I wanted a "team" to support my main char, once I got to level 60 (at which time I was planning to start raiding, but just with my main) with ports, summons, gold farming options etc.

The team

I decided to go with the setup of:

- Warrior tank
- Holy priest healer
- Mage + Mage + Warlock for DPS

This worked well for instance levelling, since they could go the standard one-pack-at-the-time route and the AE route.

Knowing what I do today, I would have probably gone alliance with the setup:

- Druid tank
- Paladin healer
- Mage + mage + warlock for DPS

Reasoning behind this is that:

- Druid does more DPS in feral tank form than a prot warrior, is easier to gear, easier to manage and can supply both thorns (for AoE grinding), MoTW and an extra res
- Paladin can supply retribution aura for AE pulls
- Paladin can supply blessing of salvation making holding threat easier

End-game instances

Doing the end-game instances is a lot harder than I anticipated. I wipe more frequently than expected (although my gear is still pretty sucky) and I have to pay attention at all times. That being said, it's both challenging and fun - and sometimes slightly frustrating ;-)

I'm very happy that I have two sheep available - having just one would definitely make things harder. Can't imaging having none for the 4-5 ogre pulls in Dire Maul especially.

I hadn't played a warrior before and it requires more attention than I expected. Current setup works well for end-game instances, but I often find myself wishing I had gone the druid route :-)

Going in, I imagined pre-raid BIS gearing the whole team, but it turns out to be quite a big effort - more so than levelling. I'm tempted to just focus on my main since I won't be using the team for anything but farming anyway. At least you get decent gold returns while pre-raid BIS farming :-)

I think that's it - hope it helps someone :-)