Do you actually main a bard? The amount of flaws here in your post.
I have touched on earlier about how one should consider stacking critical hit since it appears to be tier-ed rather than point-by-point linear like determination.
Skill Speed is still a junk stat. No, 100SS doesn't reduce your GCD by 1 second at all. This is where you went completely wrong about SS. You would need an insane amount of skill speed to even down your GCD to 2.00s (which you start at 2.50s) which makes it totally impractical.
Increase in attack speed only meant increase in resource depletion. If you are depleting your resources so fast that it is beyond sustainable, you will find yourself playing Paeon more, at a rate that you need it more than your MNK/NIN/DRG actually needs it, which ultimately you are gimping your own DPS due to the 20% dmg penalty from the song, and also gimping your party DPS because you aren't playing foe requiem wrong.
In any case, I have went back and re-looked into 2.5 BiS and melds, the crafted neck, earring and ring are marginally superior to the i130 versions. With the appropriate melds, you can stack crit to 699
Here's the link to my set:
http://ffxiv.ariyala.com/PA5X