I think some have mentioned but I will mention it again. As a XC Mtb’r there are plenty of riders who have bigger FTP than me and I fluctuate between 150-153lbs and 287-310 FTP.
Your ability to over FTP repeatedly and your time to exhaustion is arguably more important on many courses. I know plenty of guys that can ride away from me at a steady state effort but as soon we surge over and over again, they will get spit out the back.
Focus on different measures of fitness outside of just FTP.