Those tuners look great on it, very nice.
Gavin's Setting up your Intonation guide should walk you through it:
Step Three: Check string height at the nut.
To check the height of the nut, start at the low E string, and fret it on the third fret (a “G” note).
The string should be sitting on the first fret, or just above it, close enough just to see some light through the gap between the string and the fret.
Try holding the string down on the third fret and "tap" the string above the first fret, kind of like checking the neck relief.
You should be able to press the string down just ever so slightly onto the first fret.
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