Nice bike, congratulations!
First off, don't you dare spend one dime on mods until you buy some decent riding gear, preferably leather!
My 04 busa will climb up towards the red if I let it idle for an extended period of time. I had two different 03's and neither of them did that. I ask the dealer and he said it was not uncommon for the busa to do that. However, it has never reached the red, just gets close to it!
You'll have a blast on that busa!