Sellers agent for a flip

[Tracey Williams]

Hi BP friends,
I have a great agent that I have used to purchase most of my properties and we have built a relationship in the last one year.
Am about to list a $300+ rehab house that I purchase through her. Am wondering what are the best practice some of you have used to sell your houses fast.

Below are some of my options:

Get my agent to list it in the MLS
post it on Craiglist as FSBO
Invite several agent to come see the property and tell them I have extra incentive for the first person to bring a buyer?

My second question is that if I end up getting a buyer myself, do I still have to pay my agent that list it 3% ( because I have someone showing interest in the property already).
Thanks for your generous opinion
Tracey