If you can wait, you will get a nicer head using "set it and forget it". Just put it in the fridge and set the regulator at about 12lbs for two weeks. I have done the quick method like you did many times because I wanted my draft NOW. Had varying results.
The tough part with set it and forget it is you really need almost an entire second draft set up minus the tap.
The other option is priming the keg. Again there I get varying results. I have one that should be ready to tap today so we will see how it worked this time.
No doubt kegging is the way to go. At first I decided to bottle some. Now I bottle about zero.