They are a bit pricey, and their business model is pre-computer, but Megacycle is the cam you want. My engine is set up similar to yours and hit the 60hp mark on sloppy, stock carbs before the Mikuni's got installed: head ported, surfaced and rebuilt with +1mm valves(valves not really necessary) and HD valve springs, 11:1 piston, flat slide carbs, high performance header and pipe. It's also bored to 102mm(again, not necessary). I chose the X4 profile, which is probably the hottest cam you want if you are riding on the street, but the X2 is supposed to be quite a big improvement over the stock cam as well and doesn't require the HD valve springs. You'll also want to get a programmable ignition and fix a few things in the motor if you plan on spending any amount of time enjoying the new top end power you'll have. The decomp mechanism is sketchy when run for long periods at high rpm, as is the balance shaft drive gear.
You'll have to send your cam to them for welding and grinding so be prepared for a little extra down time if you ride the bike regularly and make sure the cam bearing surfaces are good when you pull it out. They will only polish them with the standard pricing.
This thread may help you.
viewtopic.php?f=3&t=6533