Not exactly germane to the specifics of your question, but have you seen this thread?
info/opinions on this Wilkinson bridge?
Just might make you wanna reconsider using that bridge!
I don't know exactly how narrow the string spacing can get on this bridge, but I know mine is set up at 17mm c-c and you can definitely move the saddles closer together...looks like I could at least get it down to 15mm.
No idea if the 4-string bridge is identical, so take this info w/ a grain of salt.
