I ride around mostly with pillion and the bike easily pulls away. Unless you are racing in street I think your 83kg of weight is okay.
You will be fine on the bike. Enough members on this forum at/near/above your weight that will verify that.Looking for some more feed back on this topic please. I'm currently considering a R3 as my next bike and I'm a little worried my weight of 230lbs is pushing it. Once again any feed back is appreciated.