Ok with the Job Ability it would take 24 seconds to reach the 25% Job Ability haste cap, so there's 4:36 with capped haste assuming you have haste and march on.

80% of 482 is roughly a 97 delay weapon (1.6 second a swing basically) You have a standard 6-hit build so for 4:36 seconds you be at 100tp every 8 seconds, so from WS > WS will take you 10 seconds with other delays.

276 seconds in 4:36 so in that time you 'could' have done 27 weapon skills.. and with a weapon skill like Ukko's Fury... and buffs like Restraint (the nerf really won't be that bad) & Blood Rage with a 1 minute duration.

If you have more than 1 WAR then you could alternate using Blood Rage for maximum damage output, and let's not forget the ODD on this weapon, especially if you decide to start this Zerg @ 300TP.

I may have overlooked something as I'm tired, but I really think this proposed Job Ability is just a little too much.