first of all, i dont think you need a perpendicular bridge angle if youre not having a neck angle, if thats what you mean by bridge angle. if you have a neck angle then the bridge angle should be perpendicular, or 90 degrees, to the flat plane of youre neck angle. i dont know if it matters though since you have a flattopped body, but im in no way an expert.
second of all, you will need to angle your bridge as it sits on top of the plane of the body top. i cant think of the angle off the top of my head, but the bass side of the bridge will appear to have a longer scale length than the treble side, but in reality it will intonate properly because the saddles and heights will lock into the scale length. im gonna leave that open to whoever the next pro is who reads this, so daveq i hope you read this.
third of all, locking nuts are to lock in the tuning on knife edge tremelos so nosedive after nosedive you dont have to worry about the tuning slipping in between the resetting of the knife edges and the tuners and the binding at the nut. i have no idea what youre trying to accomplish by putting it on a tom equipped guitar, nor do i know what pros or cons come with that, so go for it if you want one.
fourth of all, beautiful work so far, keep the pics coming. especially if you do infact do a swirl.