Those are great sport bike roads. CBR600 is a fun bike.
I ride a R1150GS BMW. My GF and I rode the Skaggs Spring Road on a trip out to the coast in May. We found it by looking for the little gray roads on the map. I learned about the pashnit web site after we got back. We also found the Berryessa Knoxville Road the same way.
I just test rode the new BMW R1200RT boxer yesterday. My bike is 85HP, 540 lbs, the new RT is 505 lbs, 110hp. That's not in the power/weight ratio range of your CBR600, but its damn good for a touring machine. The BMW boxers have always handled extremely well. Keith Code used to teach on a GS, but they haven't had the power. The new 160hp K1200 and the 110hp GS and RT are fixing that! The RT doesn't accellerate like a sport bike, but it would do a throttle-only wheelie in 3rd. I bet that looked ridiculous on a touring bike...
The RT had something that's never been on a bike I've ridden: electronic cruise. Fantastic. It was a bike you could ride cross-country, then go fast on the twisties when you get there.