Factory string setting for standard tuning starts at the bass side 2/32" (1.59 mm) to 5/64" (1.98 mm) and the treble side is 3/64" (1.19 mm) to 2/32" (1.59 mm) measured from the 12th fret to the bottom of the strings. The top of the strings should have the radius of the fretboard when you are looking at the strings in the playing position and by rotating the instrument while at the same time bringing strings into view one at a time. String height is determined by your preference and playing style.
If a string buzzes on the open note to the 5th fret and no higher, more relief is needed in the neck. If there is more buzz from the 5th fret to the 12th fret, the neck needs to be straighter (less relief). Check the string height at every adjustment. If buzzing is present throughout the neck, the string height needs to increase. After every adjustment it is necessary to re-tune the guitar.
The standard float height is measured at 1 1/2 steps on the G-string. If you set this first at 440 tuning, it may make it easier to keep the bridge close to the same angle while making all of the other adjustments. You may want a different amount of float - many players prefer 1/2 or only 1 step of float.
After each adjustment, return to step one, and start again.