I keep one of these with me on any bike i ride, its small, fits in a reasonable sized pocket and does lots of things. Ideally suited for the SV's smaller bolts too.
http://www.toolstation.com/shop/Auto.../sd2938/p30712
I've a larger laser set, that was around £90 that does everything, but they no longer seem to stock this.
Toolstation also do a semi decent roll of spanners
http://www.toolstation.com/shop/Auto.../sd3005/p68631
Worth a look at both. I'd recommend a socket set covering 1/4, and 1/2 in drive, or 3/8 and 1/2 in drive as well. This should cover most of what you need.