Probably would do it as long as you didn't expect staff to set additional work or provide catchup intervention, you won't complain about the fines, and you don't call up school being one of the fuming types if your child's progress that term isn't as good having missed content through choice.
I'm a teacher and would happily have a policy of 1 week authorised holiday in ks3 as long as parents didn't expect me to catch students up in my own time, set work to be completed out of school, and they didn't complain about progress if their child found it hard having taken a week off.