As a TTK who though he'd never make it on time and was on the brink of despair. Let me share my clear of E-6.
HQ: 95-96
Final clear fleet:
KTKM Kai Ni(75): Midget sub, 2x15.5cm
Yamato Kai(124): 2x46cm, Type 91 Shell, Type 0 Recon
Haruna Kai Ni(86): 46cm, 41cm Prototype, 2xType 0 Recon
Hiryuu Kai Ni(80): Suisei 12A, Tenzan Tomonaga, Reppu Kai, Type 2 Recon
Chiyoda Kai Ni(82): Suisei Ekusa, Reppu, Saiun, Saiun
Chitose Kai Ni(66): Ryuusei Kai, Reppu, Reppu, Reppu
Air Power: 207 (Enough for AS at H)
LoS: 116. KCV said 98 but don't trust that since I've had LoS at similar values with set-ups without Tomonaga and Ekusa and the fleet was sent to I. KCV doesn't add the values from torp planes and bombers so the actual values was probably ~116
This formation is a modification of Kevadu's comp so thanks man, you really helped me out. I didn't have enough yellow planes so I couldn't afford two CLTs but one was enough.
I have to admit, the run was pretty lucky. The boss node only had one boss, and opening strikes and support fleet took out three of the five trash and reduced the other two to orange and red. Allowing my fleet to pummel the boss in day battle, entering night battle with ~120 health remaining, and was blown away by KTKM-sama.
Hope this could help admirals still struggling, don't give up and best of luck