What to do to get a quicker launch...

I`d wait and do both the gear and suregrip together. If you only install the gears you will have a time getting the car to launch hard without wheel spin. Traction will be a real issue with a higher numerical ring and pinion set.

Oke, so you're saying lower gears will get me peg legging myself crazy? I can see that, although with 295/50's traction is pretty darn good.

Let's say I go for the suregrip internals with the 4.10 gears, total cost aprox 450 USD. What's the process for swapping my old gears for the new setup?

Will I need to remove the axle/diff from the vehicle or can it be done on a lift with still in the car?

Special tools?

Do I need to remove my driveshafts etc?

I'm just trying to get a scope of the work here to plan it in...