Hi @renshaw
Thanks for the explanation.
Live Edit Plugin is an old plugin that hasn’t been maintained for a long time. For your case I’d suggest you use acf_form() instead. You can check if the current user is an admin and then show the form. This page should give you more idea about it: http://www.advancedcustomfields.com/resources/create-a-front-end-form/.
I hope this helps.