I've used the paint on every car I've had for the last few years, all I do is just keep an eye on them and if they start to look a little chipped or faded, I either repaint or touch up the chips. I've never put any lacquer over them.
Mind you, I may well lacquer the stickers when I've put them on, not sure yet. Will see when they're fitted!
Stickers are coming from ebay, going for black.
Hmm, I might do the same you know. The whole lacquering process looks like a long one to me...
Either way I need to sort mine this season!
Black stickers will go well with your car being black and all bud.
but 10bhp from ya 
mine must be one of the new fangled ones!