ShiKage's Big Bang Paladin Build

Combat orders only affects 4th job skills for all classes and 3rd job for Cygnus ONLY. It does not affect 1st, 2nd, or 3rd Job skills for normal adventurers.

I'm only responding because this is factually wrong, and you really need to stop basing your build on incorrect information. Combat Orders affects 1st~4th job skills for every class. It can only put 4th job skills above the max level, but it does in fact affect all 1st, 2nd, and 3rd job warrior skills.

That's no way to build. Say for instance you are at a boss spamming Dispel, relying on Combat Orders will be more or less make you weaker as will your skills you are trying to use between Dispels and rebuffing. This same instance was the problem for people trying to rely on Maple Warrior to use certain gear when they were stat-less or low-stat. Again, this is a very wreckless way to build that will not benefit you in the long run.

CO makes every 4th job skill stronger. It's like relying on Lightning Charge... duh. You need to recast Lightning every time you get dispelled too.

Ground Smash does not combine with Final Attack for added damage meaning you'll always get that 300% damage ratio of your range. Even if Final Attack isn't an absolute it's a chance at extra damage per attack. While it may have limited range of effectiveness, you again have to think about it, what if you are in the right place when it activates and hits? That's 380% from Power Strike with Fundamentals + an extra 150% damage at random for more damage. Now add in 250% with an extra 150% possibility from Slash Blast with Fundamentals and Final Attack. That's 400% total damage at chance on up to 6 monsters total.

This is factually incorrect. Slashblast's FA does not do 150% on every target - it does about 90% on one target, 1/3 that on the next target, 1/3 on the next, and so on. So it's doing about 275% per target on average, but depends how many targets you hit.
FA definitely works with Ground Smash - it does 150% to 1 target. Which makes it 350% per target on average (150%/3)

Now add in this... Final Attack will automatically attack. Even if Ground Smash does strike at weapon speed, it will not get an automatic 2nd attack.

All normal attacks (PS, SB, GS, CB, ACB, Blast, Brandish, Panic, Coma, IS, Fury, Crusher, Sacrifice) where you swing the weapon can trigger FA. The ones that don't trigger it are special attacks like Roar/Shout/HH that don't use your weapon.

The way FA works was changed, as well - it is not guaranteed to hit the same targets you originally hit. It has its own range, calculated about half a second after your first attack - if anything's in that range, then FA can hit it.

It's also been reduced to 40% chance of triggering, making it a fair bit less likely to pop up.