Doesnt sound like to bad of a trade, just make sure you like the bike you're getting.
Also something to consider, if you plan on riding long distances, the crotch-rocket type bikes can tend to be uncomfortable sometimes (from having to hold your body weight up). If you plan on doing a lot of long rides (like 3 or more hours worth at a time) you may want to look into somethign that you sit more strait up. Or you can get a kit to turn a Ninja (I know they hav ethem for other bikes, I've just seen one, on my uncles ZX-11) that will let the handlebars be very adjustable, so you can get them into more of a strait-up riding position, or move them back down for that 'sporty' feel.