Hi,
Thanks for taking the time to read my proposal! I will briefly introduce myself and then I will let you know how I can help with your project.
My name is Traian Turcu and I am a professional Wordpress developer - I have coded and launched more than 100 plugins and themes (if you google my name you will find some of my best selling plugins and themes on the Warrior Forum and Theme Forest).
Regarding your project:
In order to minimize conflicts with other plugins and avoid bugs during updates and upgrades I believe that the best solution for making the menu work properly without the reload is to code the solution as a plugin. A child theme could also work, but in my experience the plugin would be the cleanest solution - much easier to correct if any bug occurs, less likely to lead to conflicts and easier to configure.
"Ajaxifying" the menu function of Avada is not a very time consuming task so I would be able to deliver the solution by Saturday (48h including the time required for testing and fixing potential bugs). As with all my work, I offer free full support not only during the project, but up to 3 years after I have delivered the product.
So, I can guarantee that you will not waste your time by picking me - I can deliver a clean, simple solution, 100% bug-free and on time, with guaranteed free full support through all the theme and Wordpress updates :)
I would be very happy to work on this project with you and I look forward to hearing back from you!
Traian