Hey Oldrider, don't know if you've found anything yet, but you might think about a GS500. Great for a short inseam like yours, as close to free as you can get for insurance (I pay $600 / year as a new rider with no training course), reliable, great on gas, and comes in either a version with fairings or naked. This is not a shameless plug for the one I have for sale, as I'm asking more than $3000 for mine, but rather a plug for a really great bike. I know you can find a decent one for $3000 or less. If you can find one in decent shape for $2500, let your 16 year old learn how to ride safely on something with manageable power, and be able to beat it up a little without the guilt of scratching an expensive bike, you'll be able to get most of your money back if / when you want to move into something else. I love mine, but am only getting rid of it for something with more storage options.