How do you kill a boss solo as an Archmage?

[Deathdefy]

I finally hit 20 with my Illusionist Archmage - don't stop reading here!

I'm happy with his performance apart from on red and orange names. At this point I've only been running EH since I want to hit 24 or 25 before trying to tackle EE on a build with which I'm still largely in the experimental phase.

Here's what I do:
-Waves of Fatigue once at the start (Guaranteed -1 reflex save from -2 Str/-2 Dex is probably actually not worth doing when solo, but whatever).

-Bestow Curse until it lands (I assume the -4 saves helps the Force SLA)

-DoT: single unmaximized/unempowered first 2 stacks, then maximized 3rd stack and every stack thereafter. I have enhancements in Cold, and items that enhance both cold and electric (mostly just Spider silk Robes + Iron Cloak (To be upgraded) of the Dragon).
EDIT: Reading this I realise I should have scepters to swap to hey!

-The AM Force SLA (not the evocation enhancement line that gives magic missiles, etc. just the generic one that does 1d6 per level of force damage with a reflex save for half). I also at the moment have the AoE SLA, but it seems just awful (due to the combination of a huge cooldown and abysmal damage.) at a price tag of 100SP, so I'm going to swap it out when I can.

-Maximized Ice Storm on bosses that stand still-ish.

That's about all I can afford without feeling like I'm burning too much SP for too little gain (e.g. Maximized Polar Rays, Frost Lances, etc); and it just takes too darn long.

For reference, it took me a little over 5 minutes to kill the EH bosses of Bargain of Blood solo just dotting and SLAing with the occasional Maximized Polar Ray toward the end once I realised I was going to be able to avoid drinking a pot.


I'd like advice on:

What sort of enhancement lines do other Archmages (particularly Necromancy Archmages since I assume our problems are similar), take re: elemental damage and force?
-I'm sitting at 7/1/1 force, 4/1/1 Cold. I have basically 0 discretionary points beyond that with everything tied up in SLAs or Spell Pen.

Is the force SLA worth taking?

Are there spells I should be adding to or removing from my rotation?