Appreciate all the responses.
In direct reply, I don't think I really over-brake, or if I am, it's not that much.
Here's a good reference lap (unfortunately my OBD data isnt that great, you can't see my pedal inputs):
https://youtu.be/JCVEWf9LRRg?t=302
Car is bone stock outside of pads, fluid, forgestars and 265 re71's. Definitely not the fastest car on the track (I bought to campaign in AX DS), has a lot of trouble going anywhere in 4th over 100. And of course I'm not the best driver in the world.
Fwiw, I actually called Carbotech and spoke with them before ordering those XP10's. I asked them if the car weighed too much or if I needed 12's. After doing some inspection, there is zero airflow from the front to the J55's on the LT 1LE. Not really what I'd call "track-ready" from the showroom, especially with lesser pads, fluid and a much less grippy compound tire.