Basically, just keep doing what you're doing. Start with a "stock" height (specs on the G&L website or in a post on these boards), or a height recommended by a reputable source,as you've done. Play it, see how you like the sound and then keep making small adjustments until you get a sound you're happy with - measure, play, adjust, repeat.
The measurements are important, so that you know what your preferred settings are.
Plenty of people could give you specs for what they think sounds "stratty", but it might not be what you think sounds right. You might even need to set the pickup at a different height on the treble side than the bass side, as long as the volume is balanced across the strings
P.S. Keep in mind that changing the rest of the setup will change the sound, too, so if you change the height of the trem, the height of the saddles, etc. to change the way it plays you'll need to fiddle with the pickup heights again