I got #FreeBSD running on my #RaspberryPi last week. I've always wanted to do this because I grew up on FreeBSD. I wrote up how I got it installed on my blog:https://ashton.wiersdorf.org/2020/02/12/freebsd-on-a-raspberry-pi.html …
Some comments: Yes, you want ntpd_sync_on_start, to allow the first clock adjustment to be large (which it usually will need to be). Also, you probably want to check you have iburst configured in ntp.conf for some clock sources to get quick clock sync