If you dont like the set and forget for a week method, then you can burst carb. However, as mentioned above, I wouldn't use 50psi. Set it at 30psi for 24-48hrs and then drop it to serving pressure after that. Your desired volumes are based on temp and the pressure you set it at.
Use this chart for carbonation. It's easy to read. Temps down the left side, pressure up top, and whatever desired volume is in the middle. I print this out and put it on my kegerator.