Drag Racing Tech - BFG DR, A4, launching advice?

I'm headed out to the track in the morning and wanted some advice for launching my SS with new BFG drag radials. I have a slightly modded A4 car with 3:23's. On my street tires the best launch I could do was to stall it up to around 12-1400 rpm and go. I live at a high altitude track as well.
Short burnout or long?
Waterbox or not?
Also what PSI (17" ZR1's) for the bfg's?
Thanks ahead of time.
:drive:

14 psi if you cant hook. Burn em good until they hook, and stall as high as you can. Hard to hook on a 17" drag radial with no major suspension work