I dunno, I think PowerPC machines are more like "the wake".Welcome to the trailing edge
In any case, enjoy your iBook G4. The *one* thing a 12" PowerBook G4 has over it is when you use the external monitor port a PowerBook supports "desktop extension", while I'm pretty sure all the iBooks only support mirroring. (At the internal display's sucky 1024x768 resolution.) There was a fix for that, however. Use at your own risk.
One thing I will say in defense of your decision to get a PowerPC instead of an early Macbook... I spent some time this weekend working on reactivating my "Late 2007" 17" MacBook Pro (the very earliest that will run 10.9), and I have to say I've really been put off by some of the low quality materials used in what was a $3000 laptop. Okay, I'm mostly just griping about the fossilized felt material in front of the DVD ROM drive that has stiffened to the point that it's impossible for the DVD drive to eject a disk, but... (If it were a one-off occurrence I'd blame happenstance, but so far I'm 2 for 2 on MacBooks of this era suffering this problem. The same dust curtains on my older PowerBook G4s are fine.) The hinges have also gotten quite floppy, and the wrist-rest area around the trackpad has significant corrosion that I guess I didn't remember being there when I put it away. I've had this machine since it was new, treated it well, and *haven't* used it for a long time, it just feels a lot older than its years. (Again, compared to some older Powerbook G4s, which feel new by comparison despite similar use. But then they've been blowing memory slots for no reason, so whatchya going to do?)
Probably the lesson there really is it's a bad idea to pay money for a used laptop at all, but I digress. Happy motoring with your G4!