Hello,
I've experience over all the major CMS, but why you are going with WIX? I mean I've 5 clients converted to different framework from WIX, there are major drawback of using wix like you'll have a Wix logo on the front-end.
I can provide your requirement in Wordpress or other framework. Please visit my profile you can find reviews to converted from WIX.
Hope to hear from you soon.
Thanks