Hi there @iphoenix
There is a really fantastic and well detailed tutorial out there that will help you out on this. It gives you front end posting as well as front end editing.
I simply love how it was done.
Full tutorial here
http://thestizmedia.com/front-end-posting-with-acf-pro/
https://youtu.be/JLhKFzUe4sE
Front end editing here
http://thestizmedia.com/front-end-post-editing-with-acf-pro/
https://youtu.be/4ehOO9tJ_UY
hope this helps you as much as it did me.
Ciaran
