Badbird will not fit without redrilling the post holes (badbird/tune-o-matic/2-points/bar bridge all have the posts in line with the saddles vs the 3 point where the rear posts are behind the saddles).
... and there's nothing wrong with a 3 point!
The only thing I'd say that's different about setting one up vs any other bridge is that if you need to raise or lower the height significantly, turn each post a little at a time, i.e. don't crank one post all the way up or down in one go. Also, it is ideal to keep the bridge base parallel to the strings (not the body) - this is more important for archtops (or instruments with a non-180 degre neck angle.... not sure if Gibby did that on any flat top basses with a 3 point) vs TBrids where it is irrelevant as the strings are parallel to the body.
