Dawn Warrior Skills Question

At the moment, my Dawn Warrior is in the mid/late 2nd job (50~60's). My skills at the moment are:

1st Job:
HP Boost - Max
Iron Body - Max
Power Strike - Max
Slash Blast - Max
Soul - 1

2nd Job:
Sword Mastery - ~10
Sword Booster - 0
Final Attack - 0
Rage - Max
Soul Blade - Max
Soul Rush - Max

Currently, I'm maxing Mastery, because I was more interested in Rage and Soul Blade/Rush. I know it's not following the book exactly, but it still works.

Anyway, I was thinking, after I max Mastery and Booster, I'll have FA left. If FA doesn't work with Soul Driver, it's pretty useless, isn't it? Now, I'm not sure if it does or doesn't work with Soul Driver, but if it doesn't, should I add my SP into Soul (1st Job) instead? I could max it and chuck the rest of the points in FA, since FA may be useless.

Tell me what you guys think.

It does work with Driver, but it's not incredibly important. I would max Mastery and Booster, then 21 into FA. Although it does activate with all skills, it's probably not going to change the KO rate on Driver.

Later in 3rd job, after max Driver, Soul Charge, and Combo, you can finish maxing FA. DW will have plenty of extra points since both Coma and Panic are pretty much useless with BR and Driver.

That's nice to know, but my question was whether I should max Soul (the sprite) instead of FA, and chuck the remaining 2nd Job SP into FA, and max it later in 3rd Job.

I know, and that's still the answer. By the time you hit that lvl, soul won't be very useful. It will probably hurt more than help since it just agros mobs. Driver should be 100% 1-2 hitting just about everything.

Ok. Just to clarify. Atm, I have these, at level 63.

Power Strike - Max
Slash Blast - Max
Iron Body - Max
Soul - 1

Sword Mastery - Max
Sword Booster - Max
Soul Blade - Max
Rage - Max
Soul Rush - Max
Final Attack - 0

So, now until I get to 70, I get 21 Final Attack, and NOT Max Soul (sprite) and 2 Final Attack?