Warrior %/s (KMS You & I + GMS Unleashed)

Hello fellow Warriors!

First of all I'd like to say Hello to everyone and I am new to southperry. I have been browsing these warrior threads for a long time now and I wanted to ask an opinion, so I joined the community. Getting to the good stuff my question pertains to dark knights and possibly aran's but if you have the answer to my question by all means help me please. Recently after the dark knight changes it looks like I will be changing my hero to a dark knight when this red update is out for GMS. I wanted to get a head start and start looking for a weapon. In GMS both the spear and polearm cheap prices and I have enough to obtain both and more. My question is which one is worth it.

Now, the biggest difference I could see between the fafnir spear and the fafnir polearm is the weapon attack difference and the attk speed difference.

Fafnir Spear is currently at Normal attack speed (6) with a weapon attack of 171 average.
Fafnir Polearm is currently at Fast attack speed (5) with a weapon attack of 153 average.

Looking at how dark knights scale with weapon attack I am not sure what to pick. With booster I assume that dark knights attack at Faster (3) with a spear. This is off the knowledge of the fact that booster doubles your attack speed. "Doubles the attack speed of your weapon. Must have a spear or polearm equipped". And does this leave the polearm at 2.5 or does it round down to (2) being fastest because I don't see a column for (2.5).

Also which one would be better in this case. I am going to assume that polearm gets you to fastest (2) in the next part, so if that is wrong than whatever I say below is wrong. Would the (1) attack speed difference be worth 18 weapon attack difference from the two weapons. The %/s with hyper skill with no sharp eyes with (3) on 0% pdr 1 target is 20197%/s and with (2) is 22135%/s giving me a difference of 1938%/s difference. and the difference with sharp eyes increases even more to 2392%/s. Now this tells me attack speed just gets better and better with more buffs but again is this worth the 18 weapon attack from a spear or am I calculating this whole thing wrong.

Thank you very much for your input(s) and I hope to hear from you all!

not really the place for these questions, there's a dedicated "warrior questions" thread in the help section, but i'll answer what i can.
booster reduces speed by 2, it doesn't "halve" it, so the spear goes from normal 6 to fast 4, and the PA from fast 5 to faster 3. (cap being 2) so for all intents and purposes the PA is better unless you manage to get 2 bonuses more to attack speed (say, decent SI and aswan +attack speed)

one attack speed is around (give or take) 1.09x damage multiplier, so if you have 500 attack with the polearm equipped, you'd need to have 545 attack with the spear equipped to break even.