Hello,
I have done a thorough inspection of you project description and I think a normal front end with a pinch of CSS, SASS and JQueryUI should do the trick.
I have 5 years of experience in PHP, JavaScript, CSS and HTML. Along with extensive knowledge of Windows and Unix based web server environments.
I will set up a demo site where you will be able to see the changes that I make and it will be your choice as to how you want to change them or whether you want a particular feature or not. And the best part, I will do that for FREE. Moreover, since I will be setting up a different environment, your existing site will not face even a millisecond of downtime.
In case you have any doubts as to my proposal or if you wish to take the discussion further, feel free to send me a message. I will be happy to answer your questions!
Regards,
Daniyaal