Help with planning my AL army!

[Mortarion24]

So the deal is I'm planning to start a Heresy Army but I need to get it planned before I start buying it (My poor, poor wallet).

I'm still umming and arring between Death Guard and Alpha Legion but now their rules are out I figure I can get a much better idea on what I want.

With either list I'm looking for a fluffy army (my DG are a foot-slogging force with some big guns attached).

What I've come up with (aiming for 3k points) for AL is the following (using their RoW).

Alpharius

Exodus

Librarian Terminator

???Veteran Squad/Stolen Squad (damage unit) OR Terminator Squad/Stolen Squad (Tanky unit)

8 Destroyer squad with Rad Missile Launcher (Goes in Storm Eagle)

3 x 15 Tactical Squads to fill up the required core (Why can't we use seeker/specialist squads for this? )

7 Support Squad with Plasma Guns

5 Seeker Squad with Combi-Plasma

3 Jetbike Squad with melta bombs

Storm Eagle with Multi Melta, Lascannons and Hellstrike

5 Heavy Support Squad with Multi-Meltas

Medusa

The main plan is to infiltrate the majority of the army up and unleash a firestorm on turn 1, take their deployment zone by turn 2 and hold it against any reinforcements. Preferred Enemy (Everything) will make the plasmas deadly against any tanky units the enemy has, whilst the weight of firepower from the tacticals should break down a lot of his main squads. Destroyers and Storm Eagle turn up asap and drop onto any unit still holding objectives and wipe them out. Exodus eliminates any leaders to drop Ld and special rules. Alpharius gets into combat with anything I want dead asap and ruins it. Multi meltas with preferred enemy should hit most of the time.

The problems I'm having are...

-Fitting this all into 3k is tricky.

-Choosing what kind of squad I want to steal... Do I pick a tanky one to hold objectives and draw firepower or do I go all out damage to try and wipe the enemy asap? Do I go for melee specialists or ranged?

-Is the Librarian the best choice? I was going to pick telepathy to help disrupt dangerous units etc but he is expensive.

-The Seeker Squad doesn't seem to bring much to the table. They are very expensive and the preferred enemy rule is already army wide from Alpharius. However they are fluffy and they can take banestrike ammo (although only 5 men atm due to cost).

Does anyone have any idea how I can manage to make this idea into a workable list? Especially what unit I could steal to synergies well with the army?

Thanks,

Omegon Mortarion