3 things I need to know about Arans

I'm gonna write a short program soon to test different variations, but what I'm finding is that without SE or Critical Rings, use of Final Blow proves to be better DPS, around the neighbourhood of 1.02x higher over a 100 second interval, seemingly more in favour of using Final Blow as the interval remains shorter.

With Critical Rings, the difference is negligible in favour of without Final Blow.

However, with SE, it's the reverse where any use of Final Blow will lower DPS.

I'll need some sort of standard for measuring these DPS differences.
Current options I use:
Combo -> 200
Combo -> 1000
Time -> 100s
Time -> 1000s
Combo Tempest
Time -> 200 Combo

I'll need to verify my scripts too to make sure they're using accurate values.