Hello again, charging a system is an art, the exact amount of refrigerant is critical. I can coach you on that, but it depends on which refrigerant exactly...and how much air flow there is over the coil inside the house, and what the inside and outside temperatures are at the time.
Charging by super heat and sub cooling alone can result in an over or under charge, an over charge will flood liquid refrigerant back to the compressor and cause a lot of damage.
An undercharge will result in icing the cooling coil and higher operating expenses. Its tricky business.
I am 75 years old, with 55 of those years in this business, the last 20 years of it consulting for major firms nationally... if you need a simpler answer then I am not the guy who can help you... what I can do is coach you live with pressure and temperature readings if you most of those skill sets.
Let me know if you would like me to opt out or not, so another of our experts here might be able to give you more of a rote type answer.
If you need a lot of such coaching as I provide however it will take a few more hours in some cases depending on your skills and equipment, and that sort of training when it goes into hours and hours is at a premium if I do it.
Let me know, we can go from there accordingly.