Yeah find some other riders man.
I ride with several different groups, ones is a group of sports tourers/ adventure bikes all around 1000cc, they struggle to keep up on corners.
I ride with a group of 600 sports bikes, good bunch and I've have to ride hard to stay with them but good fun.
The main group I ride with consists of a Z300 and a CBR500R. They're the best, machines are closer to being matched. Its all about the rider.
Basically find some good guys to ride with. Stick with your R3.
I for sure am still gonna ride mine, even if I end up having 20 bikes. She's not going anywhere.