70 deg. Db outdoor temp. 62deg db/58deg. Wb indoor temp. suction press. 65psi, head press. 195psi, evaporator temp. drop 20 deg. Compressor superheat 16 deg. Is the unit udercharge, good,overcharge

With a 20 deg drop across the evap coil, you are doing good. However, if this is a residential ac system, the inside temp may be out of range for the charts available. It really all depends on the equiptment and many other factors. Only real answer will come from an onsight professional.