Hello everyone. New rider. Purchased a demo Stache 9.8 from local trek store. Week later purchased a brand new trexk remedy 9.8. Both are completely different animals. But with that said. I have some money to play. And I was thinking about upgrading the brakes, gear shifter and maybe different stem on the Remedy 9.8. I’m 240lb. I feel like the bike struggles to stop me lol. I was eyeing out the SRAM XX1 gear shifter. Along with Shimano XTR brakes. My concerns are. Would I be able to run Shimano brake lever with the SRAM gear shifter as one ? Would it benefit to upgrade the gear shifter or should you upgrade the derailleur also? What are your thoughts on these parts? Or should I just go with high end SRAM brake set up ? Also what do you recommend. 2 or 4piston brake calipers?