I would say cams with a stage one setup would be a great improvement . Thing most people do first is the stage one exhaust and air flow I guess next would be cams then a big bore kit and heads to finish it off . There will definitely be a noticeable improvement in performance go for it I do not think you will be disappointed .
I'm having the Andrews 57H cams installed in my bike this week. I bit of advice I can offer, is if your having a dealer do the install, buy your own parts (cams, adjustable pushrods, bearing, gasket kit and other small misc) online and then get a quote from your installer for time only and bid/ quote it out. I'm saving a couple of hundred dollars by buying my parts online and not through the dealer.