Hi @juiceex
ACF has acf_form() function to show the form automatically. This page should give you more idea about it: http://www.advancedcustomfields.com/resources/create-a-front-end-form/.
So you can add a form like this:
acf_form(array('post_id' => 'user_' . get_current_user_id()));
I hope this helps.
