How do you determine "ride height" to make suspension mods??

as stated, set it to what you like, use two jacks and raise or lower it, stand back and when you think it looks good, that's your ride height, only you can decide what you like, my scamp sits high and dry, like a 68 SS dart, lot everyone likes the look, but it's my car and my choice, and when they complain about my ride height, I tell them to build their own car and set it the way they want.