While the aesthetics are mostly a matter of personal taste there is one thing you might want to concider tonally and that is covered vs uncovered.
There is a tonal difference in that the cover takes a bit of treble away, makes it more rounded making uncovered PUs sound a bit more open. BKP do make the difference smaller by adjusting the wind slightly, but there still is a difference.
This, just like all the BKP tutorials, is very helpful in that. Nolly rocks btw.
http://www.youtube.com/watch?v=D756154qUdoI would however advocate for you to go by optical measures only as the difference is so small that it is super easily adjusted at the amp or pedal stage.
Oh and btw, you might wanne concider changing the pots and caps while you are at it to get the most out of your new PUs. The pot part here only applys if you are not going for push pull wiring options.
The BKP 550k customs come highly recommended being very close to spec and a little over the normal 500k giving you that extra tad of openness and treble, which btw can also make up for covers compared to normal pots.
On the cap side the BKP Jensen ones are very good but very big too. Generally paper in oil caps are pretty nice, but if you can get them at a resonable price Orange Drops are also very cool, they are what I use.
Plus you might wanne concider either adding a treble bleed to the volume pot or go 50s wiring to keep treble being rolled off when you roll off the volume if that is something you donīt like. I like the 50s but it also changes the taper of the volume pot and the interaction between tone and volume, which is something I like, my volume now reacts more on the first third, which I really dig.
And yeah, series / parallel or a split version (with resistor as I recommended) is always cool.
