The general rotation is:
- Get to >90 AP,
- Cast as many 20 AP Starsurges as you can before you run out of AP
- Refresh any dots that need it
- Build back up to >90 AP (casting Moon spells if available, especially Full Moon)
- Repeat
The goal is to maximize the number of 20 AP Starsurges by casting other spells during the 3 second window of the buff to get back some AP.
At your haste level, 4309, the only thing you can fit between Starsurges is New Moon or Solar Wrath. So you should do that. Build up to >90 AP, then cycle SS SW until you run out of AP.
If you started at 100 AP, it would look like this (sub in New Moon for one of the SW if it is up):
Code:
Spell SS SW SS SW SS SW SS SW SS SW SS
AP after spell 60 70 40 50 30 40 20 30 10 20 0
That's 6 Starsurges, 4 of which are 20 AP. Better than nothing! Once you get two stacks of the buff you essentially lose 10 AP per Starsurge (-20 from the SS +10 from the SW). You waste some Lunar Empowerments, but it is worth it to cast 20 AP Starsurges.
You should really try to get at least up to 5417, which gives you enough haste to cast Half Moon or a Starlord-buffed Lunar Strike during the buff. This lets you Starsurge weave a good bit longer:
Code:
Spell SS LS SS LS SS LS SS LS SS LS SS LS SS LS SS LS SS LS SS LS SS
AP after spell 60 75 45 60 40 55 35 50 30 45 25 40 20 35 15 30 10 25 5 20 0
Now you can last for 11 Starsurges and you are only losing 5 AP per Starsurge once you get 2 stacks of the buff. You are wasting Solar Empowerments, but it is still worth it.
Once you hit the 9750 breakpoint, you can cast 2 Starlord-buffed Solar Wraths between Starsurges. Now you can cycle SS LS SS SW SW (wouldn't have enough Solar Empowerments to just cycle SS SW SW). Sub New Moon in for a SW and Half Moon for a LS.
Code:
Spell SS LS SS SW SW SS LS SS SW SW SS LS SS SW SW SS LS SS SW SW SS LS SS SW SW SS LS SS SW SW SS LS SS SW SW SS LS SS SW SW SS LS SS SW SW SS LS SS SW SW SS
AP after spell 60 75 45 55 65 45 60 40 50 60 40 55 35 45 55 35 50 30 40 50 30 45 25 35 45 25 40 20 30 40 20 35 15 25 35 15 30 10 20 30 10 25 5 15 25 5 20 0 10 20 0
This gives you as many as 21 Starsurges before you run out of AP (though you will need to cut it short to cast Full Moon before you reach that many). You are only losing 2.5 AP per Starsurge once you have two stacks of the buff: (-20 +15 -20 +10 +10) / 2 = -2.5. With this scheme you are also wasting much fewer Empowerments (no Solar Empowerments are wasted and only every other Lunar Empowerment is wasted once it gets going).
During Heroism you will be able to cast more spells between Starsurges. At your haste level, you should be able to cycle SS LS SS SW SW during Hero. This will actually be a net gain in AP if you also have Incarnation up ((-20 + 22.5 -20 +15 +15) / 2 = 12.5 AP gained per SS). So cast extra SS as needed to avoid capping AP and dump all your AP before Incarnation ends.