Press and hold your finger on the first fret and the last fret then use your little finger to check the clearance at around the middle of the neck. You should just have enough gap to slip a business card under the string and the crown of the fret.
Yeh I got to that point and could have raised the bridge higher too but thought it was getting a bit daft and still buzzing soI stopped before things got out of hand ,I took it back as it was and thought it was time for a stubbie and chill a bit
Is the buzz there when you plug it into an amp though? Sometimes you can get a buzz which doesn't actually sound through the amp. Check there are no loose screws, nuts etc on the guitar.