WR250R is pretty restricted from factory. A pipe and Power Commander really opens them up a lot and to be honest I reckon they go better than any of the 250 road bikes on the market at the moment. A WR450R would be ideal. I rode the new Injected 450F on the weekend but it's still a rattly grumpy motor. XT660R could be a good option if you need more grunt (pretty sure this is the bike Yamaha considers their "WR450R). They're pretty heavy but probably no more than XR600's. Nice smooth low maintenance engine again , and the whole bike is very well built. Probably a bit big for single trail but fine for fire trails and more open bush.

That CTP price on the DR isn't too bad. I've heard of people paying up to $500 for CTP alone on a 250 in NSW. Here in ACT the rego and CTP combined comes to about $210 if capacity is under 301cc.