I say don’t overthink it and leave the statement as it is. If there are those that don’t like it well, they can GFT.
If you are worried over whether the verb should be “is” or “are”, then also worry over if “while we still have that” should be “while we still have those”.
Health. Safety. Paramount.
Health good. Safety good. Ogg afraid of fire.
skip the overly wordy paragraph and use this
“As you value your life or your reason stay away from the moor”.