Raiding Downs - An Emalon adventure

Last evening we joined forces with a "sister" guild to take another crack at Emalon, the new boss in Vault of Archavon. Since our guilds are small we've been doing this on 10 man mode. This is probably our 4th attempt with about 5 of us of who have been in all of the attempts.

The raid leader has been instructing us to do as follows: (perspective of facing the boss at the at the stairs)
Off-tank leads off gathering up all the adds near the stairs on the front left side of the room.
Main Tank (always has been me since I have the most health/armor) is taunting the boss (since the OT starts off) and positioning him to the back right part of the room.
DPS - Melee is handling adds and dpsing them down a bit but not killing them
DPS - 1 "plate" dpser has been assigned to kite new adds to the OT.
DPS - Keybinding a mark to the overcharged add
DPS - Ranged on boss until overcharged add appears, then all dps on the add
Healers spread out appropriately to minimize chain lightning.

The closest we have gotten is having the boss down to 5% health left. That was our "best" effort and the results before and since then have not even come close.

We're all seeing the strategy as "not bad", but obviously it's not good enough. What do I see as the issues?
1. We're losing the dps race on the overcharged add
Correctable
2. We're cutting it dangerously close on the boss's enrage timer.
Correctable
3. There's too many little mistakes adding to wipe frustration
Correctable
4. We need the same 10 people to work together before we can mix and match people in to get all a chance to beat the boss
Maybe

How do I think we should correct the issues I've described.
1. The dps race on the add.
The keybind to mark the overcharged add idea is "OK". We could still use this as a visual clue.
The key idea is to have a macro assigned to target and kill the overcharged add that dps can spam based on boss mods warnings. This is something I have to research.
2. The boss enrage timer.
I've had feral faerie fire on the boss from the fight's start (growl off OT and then FFF and mangle to establish threat), and in our better attempts it was about to drop off (meaning we have 1 minute left to kill). The problem with the current strategy is twofold.
- The positioning is off. I propose we adopt a strategy as follows.
Same opening with OT gathering adds and MT taunt and position
MT positions to the back left corner of the "pentagon"
OT positions adds to the front left corner of the "pentagon"
Ranged dps and casters spread out on the right side of the "pentagon".
OT keeps adds busy, taunting any new ones that appear
ALL dps on boss until DBM warns of the overcharged add. DPS then needs to spam macro to target and blaze down the overcharged add. Melee dps needs to position themselves to avoid the boss's big blast and stay on the add. This last part is probably the trickiest and precise positioning will need to be worked out to keep melee dps safe.
3. Little mistakes
We've had some minor issues with the add finder plate dpser accidentally taunting the boss. No biggie, especially if we change to my suggested ideas.
Aggro. DPS and healers need to delay just a bit to let the tanks get their aggro. Again no biggie.
4. This is always a challenge having the same core make the initial attempt succesfully. I don't suspect it will happen, but we can hope. The other issue will be getting the raid leader to step aside on this one and try something new. I hope we can get this resolved.