Regarding your plans to touch up the paint, there may be a few things to consider prior to ordering materials.
Does your bike presently have a clear coat finish? Will your touched-up paint and clear coat blend smoothly into the existing paint? Are you experienced in the job's skill requirements and able to achieve a proper repair?
You mentioned your bike's paint ,
"is generally in excellent original condition". Does this mean you have only a few small chips and/or scratches you'd like to touch up or are you planning a full re-spray?
An alternative might be to consider using a matching 1-part acrylic enamel for the touch up work and eliminating the need for a clear coat. Using several thin coats of paint to fill a chipped spot, then color sanding with 1000-1500 grit to level the spot, and polishing to a final gloss will eliminate the bumps n' pimples that results from piling on too much color and clear. Often, paint repairs are more obvious than the original nicks.
Small touch-up jobs can turn out like a piece of grizzly meat... the more you chew it, the bigger it gets.
Check this site for your paint needs.
http://colorrite.com/ Good luck with your project. We all like shiny bikes. Well, many of us do.
