Depending upon how much you want to spend...

I would start with the head and get new cams, cam gears, and springs. You can get ITR cams and springs and some AEM cam gears then spend some time on the dyno with your VAFC. Or you can look into getting Skunk2 products, which are a tad more expensive but of good quality and research and work very well in VTEC B series motors. Lastly you could look to get a complete TODA package with some spec B or C cams. This will be very costly but is worth every penny.

Also think about changing your CR with pistons (I like the ITR and TODA) as well as changing your head gasket (different thiknesses will raise or lower your CR).

As far as the ITR & CTR cams go I believe that the GSR intake cam is the same as the ITR exhaust cam so that can be reused along with you intake cam springs. Also the CTR intake cam is the most aggresive, moreso than the ITR, and you can use that with either CTR or ITR intake springs.