If you're indeed a "pretty good sailor", you're might want something a bit more technical than a Hobie 16. If that is the case, pony up a little more cash and consider some of the other options suggested above (something with a spinnaker and with better controls). The boards are definitely something to concern yourself with. If you sail solo, you'll want to lean toward a lesser boat without boards.
If you just want something to dick around in, you can't beat a Hobie 16. The cost is low and there are plenty of spare parts and resources to get them. However, at 200 pounds, I found I was at the outer fringes of it's practical limits, though. It can hold more weight. . .but the leward hull can bog down just as you start flying a hull. Kind of takes the fun and excitement out of it.
Another benefit of a Hobie 16 is that you can pick up an older model for ~1000-1500 and sell it 2 years later for not much less. You really can't go wrong with this. It's a good starter boat . . .but you'll likely get bored with it unless you are racing other Hobie 16 sailors.
The Hobie 16 does have a spinnaker option, now, so if you are a single-hander, it really might be a nice option for you.
Rest assured, you will get bitten by the racing bug. That's when you'll sell your mono-slug and get a Blade or Nacra 20.