Question for you DRAG RACING guys! or Pro Street???

[smoknbarrels]

I need experienced help here.

I am making my truck into a pro street SWB and putting a 4 link in it.. I am running 29x18.5 M/T sportsman pros... the question is: what kind of speed should I try attain when I shift out of first at 6000 rpm??
I am trying to pick a rear end ratio but I don't know which yet..
should I be going 44 mph? or 50 mph?? less??

I also need to buy my tranny right away, and was thinking of getting the TKO-600
1st 2.87
2nd 1.89
3rd 1.28
4th 1.00
5th 0.64

but the gears are not the best. because if I make 1st fairly tall (by changing my rear ratio), then I will be going way too low of rpm on the hiway in 5th when cruising.
Any reccomendations (besides going automatic) know of a better tranny for me that will hold 600hp and run quiet?

I know there are lots of questions here, I hope someone can give me some insight.