Some 430 questions.

[ziess]

Hey, I just picked up my first Rickenbacker for cheap! It's a lowly '74 (from the pot codes) 430 in a faded-to-yellow white.
The tuners have been changed to plastic-tipped Gibson Deluxe Kluson-a-likes and the bridge has been changed out to some Schaller stoptail monstrosity.
The Schaller seems to have completely the wrong string spacing for the guitar with the strings being too widely-spaced at the heel end of the neck so, along with the fact that it's clunky and ugly, it needs replacement?
Any ideas on what to replace it with? I'm a big trem fan (all my other Electric guitars have trems) so a Bigsby would very much be on the cards. I presume that there would be nothing to stop me fitting a decent bridge and a B5 tailpiece? The neck is set pretty high on the body for a bolt-on so the break angle over the bridge would be no problem.
If I wanted to go down this route does anyone have any suggestions as to which bridge I ought to use? If I wanted to go hardtail, is there a combined bridge/tailpiece I could use or would I have to use some kind of separate tailpiece?

Another thing that's bothering me is the electronics. The bridge pickup has all the bass rolled through a cap (probably seemed like a good idea in the '70s) but I just wanted to check that I'm not going to make a big mistake rewiring this thing! The electronics are as-of-yet untouched so I'd be messing with some vintage (ha!) wiring.

Thanks,
Tommy.