Those numbers sound about right. However LF, as you've probably heard, an A/C system can have good pressure numbers, and still be low on refrigerant. What you're doing is not hurting, and I commend anyone willing to get up off their couch and do something about it. Respect. But your system may not perform as designed even with good pressures, if it is low on refrigerant. But in any event, I think your system will perform better now that you've serviced it, and probably better than 90% of other systems that are low.
The only true way to service the system and return to original performance is to add the system's spec'd refrigerant level. However, I'm in agreement with what you've done to date.
There is one thing I'm curious about. It may or may not be an instruction on the refrigerant can (I sort of doubt it due to tree hugger issues). When you connected the refrigerant can to your low side system, did you remove the air from the can's hose?
Here's the deal in case you're not following. There's air in that can's hose. It's not much, but it will have an effect on your system. Maybe minimal, but it's something your system's dryer will have to deal with, because that air has water vapor. Anywho, there's a simple way to deal with that air if it is not in the instructions. On one side of the hose or the other loosen it so that it leaks. I'd have to see this can to explain it better. But while the system's low side valve is NOT open, push a bit of refrigerant pressure down into the hose, then crack the threads of the hose back off the low side port. Enough to hear it hiss to release the pressure in the hose. Do this a couple times until that hose would only have refrigerant in it.
I just thought of an incredible bidness idea. Servicing A/C systems ... FOR STRIPPERS! I could put flyers on their cars in the parking lot. Compensation for services rendered? Not discussable on the forum!