Well, after too much time, this is what I came up with for spring recomendations...
Front=500lb/in for sport touring mode
650lb/in for track mode
Rear=300lb/in for sport touring mode*
350lb/in for track mode*
*rates are calculated assuming you are using 2 coilovers per corner or 4 springs total on the rear axle
If you are buying coilovers, allow 2/3 of the available travel for bump and 1/3 for rebound typically. For a coilover with 5" of travel for example, use about 3 1/2" for bump, and 1 1/2" for rebound.
Again, sorry for the delay. I hope these figures can still do you some good.
Keep us posted.