You also don't want to be too far behind. The last addition to FSD Beta 10.69.2 series based on 2022.20.x had new additions primarily for those on the three 2022.20.7/8/9 versions. Not so much for those on older versions and extremely unlikely for those on 2022.24/28/36.x newer versions.Now that it's clear 10.69.3 is running on 2022.36.15, I immediately got the push of 2022.36.6 (as many others here did who are waiting for FSDb)
Tesla even replied to NHTSA when they asked for FSD Beta:
Your VIN… is currently running a software version that is newer than the latest FSD Beta software version (2022.4 vs 2021.44.30.15) and we avoid downgrading software on production vehicles. The next FSD Beta release is currently planned for next week (V10.11) and will be newer than your current version. Therefore you could expect to download FSD Beta sometime in early March after v10.11 releases and assuming the SafetyScore on that car is still 97+.
So given that FSD Beta 10.69.3 is based on 2022.36.x, it seems safest to be on that same branch if wanting to get added.