Granted my Stage II cams are 'blower' cams, and thus not quite as aggressive, I still think you'd be fine with the stock converter. I have no problems with low end torque at all with stock gears and converter.
And since you have gears already, that helps a LOT. Think about it: the stock cams range are what 1800-5500? If new cams shift it up to 2500- 6200, just how long does it take your car, with 4.10s, to get to 2500 rpm from a dead stop? It isn't very long....
If your tuner doesn't spend a little time on the tune, you could have some problems with converter surge with a stock converter. My tuner is good, and every now and then, I'll still get a little converter surge. But at the same time, I have my idle set at 700 rpm. It gives no problems at 900.
If you get a stall, go no less than 3500. I have ridden in a car with a 3600 stall (can't remember exactly which one), but I couldn't tell it had one in it based on the part throttle characteristics.