Kind of surprised no one suggested to leave the bike as is and get a bit more comfortable on it before you start sucking more power out of it.
I understand you've been riding your whole life, but this is your first sport bike so it's a different style of riding from whatever you're used to. Granted - the PC and any accessories you add to it won't net you tons of power, but if it was me - I'd be putting my dollars into suspension/braking first but that would be after I got more comfortable on the bike as it sits.
I'd also check to see if the stock suspension needs to be refreshed.
The K4/K5 tokiko brake calipers tend to need regular servicing, flush out the brake lines/reservoir for any condensation, swap to SS lines perhaps, etc.
I bought my K4 with a PC on it, uploaded their canned maps for the modifications my bike has, and noticed almost no change. If I didn't have the PC, I probably wouldn't buy it. If the Bazzaz was available for my bike I'd go that direction like someone mentioned above. They offer a bunch of add-ons - quick shift, traction control, auto tuning, etc.