High wiz questions

Just got a few questions for high wizards out there,

I am trying to get maximum speed out of my high wizard. My setup is going to be a mix up of the following.

F.book+9/Gerust?
F.book/Dunkelis?
Ambi/Dunkelis?

Exe/Moldus?
Hulam neme/Moldus?

Merc/Tarna?
Merc/Ushi
BEH/Ushi?

I am slightly confused because I am not too sure of the delay on high wiz skills with max dex. I want to have instant delay and almost instant castime.

Is it possible to have max speed with this set? The following set is the one I want to use most.

F.book/Dunk
Exe/mold
Beh/ushi?

I am currently using

Ambi/Dunk
Exe/Mold
Merc/Ushi

I realize that this setup too much delay but I am not too sure.

I also plan on using 3-4 fluency abilities, If i have all of these abilities is the BEH really required? If so I would be able to swap out BEH/Ushi to Merc/Ushi. 

Would something like 

F.book/Dunk
Nemes/Mold
Merc/Ushi work?

Remeber That I need maximum delay and almost max cast speed.
If anyone has any thoughts on these sets pls comment on which one would be the most effective