2 -> 5 Boxing..

[Ualaa]

I would either go Tank + 4x Elemental...
Or Tank + 3x Elemental + 1x Something else.

3x Elemental can cover heals easily.
You don't need the warlock/druid in the mix for the 13% spell power boost, with the DK tank already.
But more diversity doesn't hurt either.

I might go DK + 3x Elemental + 1x Resto Druid or Disc Priest.
Either is a strong AoE healer, gets you useful buffs, and can main heal well.

Then again 4x Elemental (don't need a dedicated healer), can dish out more dps then 3x Elemental + 1x Any Healer, and will not have any issues with heals.
If you want to dual-spec one Resto, for harder content when you're starting, that's an option.

My group of 1x Prot Pally, 1x Demo Warlock, 3x Elem. Shaman...
Has zero issues healing any 5-man content.
I cannot imagine 4x Elemental to have any issue.
I pretty much have 3x Lesser Healing Wave = Complete Heal, or close enough... and 3x Chain Heal, which I don't use as often.





Going from two to five.

Chances are, you play Tank + Healer (slave) currently.
Adding 3x DPS, is a lot more going on initially, but it gets easy pretty quickly.
Watching Youtube videos of an encounter gives a good idea of how it is boxed.

You'll want to look into click castsequences, for the DPS.
I'd probably have the DK go Unholy, both for the 13% spell power boost, and so you can use Stealthy's Unholy click tanking macro.
The more things you can automate the better.

Ideally, you will park your slaves, drop the totems, pull with the tank, mash a single key for Tanking + DPS.
Hit some keys for heals as necessary (or mouse heal if you run HKN for mouse broadcasting in conjunction with Keyclone, or move to IS Boxer).
And pretty much turn/move mobs with the tank, or move the slaves out of nasty crap on the ground.

You'll be able to include Frost Resistance, Nature Resistance and Fire Resistance totems, along with Grounding and Cleansing, which helps enormously in certain encounters.
Also 4x Healing Stream (or 3x Healing, 1x Mana) is pretty amazing support heals.
If you glyph Fire Elementals, that's fairly amazing AoE power, every 5 minutes.



I'd probably go with Recruit a Friend.

You have two accounts A and B.
Let's say your Tank is on A, and your healer is on B.

Link them like this:
A -- C -- D
B -- E

That way, you can boost with the tank on A.
And C/D will both still get RAF, because of their link.
While B/E will get RAF from their link.
And you'll still be able to level 5x toons, if you want to go from scratch without boosting.

If you boost 4 toons, the granted levels which C can give to A, based on the levels granted to C from D (ie, cascading granted levels) will add up to a full toon.

If A were to boost 4 toons on CD/BE.
C/E would each grant two toons to A/B.
D would grant two toons to C.
And A would get an extra toon from C, because of the levels D gave to C.
Which gets you:
A) Initial Tank + 3 Toons (from granted levels).
B/C) Four Boosted Toons + 2 Toons (from granted levels).
D/E) Four Boosted Toons.