Welcome on board M8
My advice..........leave it standard!
I also never had a starter relay problem with my old Falco or any other problem to be honest. You've bought a superb bike and I'm sure you'll enjoy riding it.
Most of the mods used by forum members here are very much related to how much use you are planning on getting out of the bike. Scottoilers etc.. are superb if you ride in all weathers and go touring etc.....otherwise a tin of Wurth dry lube will be just as effective if you only plan on summer use. The side stand however is an issue, especially if you plan on playing with the suspension and the shock length as the bike can easily fall over

There is plenty of info on that here
Loud cans are a must as is a renegade airkit along with a good chip (The Aprilia Carbon SL chip is good) you must re-valve the forks, fit an ohlins shock, a mille swinging arm and convert to a 2-1 Mille exhaust. The Barnett clutch will give a lifetime of use as well. Personally I found fitting a steering damper also helped but it depends on your riding style etc..
I'm guessing yours isn't a silver one so unfortunately you will always be at a disadvantage when it comes to sheer speed

so fitting a 16t front sprocket will help the low-mid range pull whilst only knocking a few mph off the top end.
With any luck you will be totally skint by April, because these bikes
can suck a lot of money out of your pocket if you let em!
F9
