Your base value for DH is 380 without melds, which is equal to 0% DH.
DH melds and party buffs like Battle Voice increase your DH rate.
Afaik the lowest SkS you should've is 2.43s GCD. I played WAR during Creator back in 3.x with the old 20s Berserk. It was possible to do with 2.43s, but almost no "breathing room". 2.4s looks perfect for a 60s rotation (25 GCDs).
A comfy SkS for WAR is 2.38s GCD and faster, but not below 2.35s. WAR and DRK don't really "want" to have the same SkS. While their Delirium and IR is on same GCD, their Gauge generation differs. You can also hold your combo and start Delirium without losing it, since 5.0 has its combo follow-up duration increased to 15s.
