A/B Test Required for Wordpress website (home page)

Hi there, I have a Wordpress website and I would like to set up an A/B Test for the home page of the website. So currently if some one logs onto the website there is a header div under the menu and in here is a call to action "Try a FREE Demo". However, I would like to set up an A/B (Split) Test. If another person comes onto the website then I want it to show another variation of the header div with a different call to action. I would like to set goals for both and want some reporting on the results. I would like to know how you plan to do this? You can let me know by PM. Whether it's through Google Analytics Experiments or another method but please let me know. If you had some experience in doing this previously please let me know. My budget for this is $30 and I want you to stay within that. Please bid early as I will be making quick decision. Thank you