R comps are good for almost a 2 second reduction in time at Laguna so I wouldn't call that + lightweight 18's near stock, but that's a really good time nonetheless.
I'm assuming you are running with disc off? I feel like its really hard to come down in time with any sort of traction control on.
For me, modding the car makes it more fun to drive. For example camber plates got rid of most of my under steer and made the car a lot more enjoyable at the track. It brought my times down, but so does more experience. I just want my car to be fun to drive at the track while I get faster.