Avenue: Gallery page customization (replace default with slideshow)

Reference our site:https://www.northerna1mi.com/for-sale

I'm using Avenue template Gallery pages linked from an Index so that it's easy for the client to update their Equipment for Sale listings a few times a week.

The client doesn't like the long list of images, and wants to replace it with a slideshow -- but this isn't possible in Avenue. None of the work arounds are appealing:

• I don't want to use a different template. • Using Gallery Blocks or anything other than simple Gallery page updates will be too difficult for the client to maintain on their own. • I don't see any pre-written code I can plug in to make the list-of-images -> to -> slideshow change needed.

I'm interested in finding someone who can write custom code so we can keep things the same but make the images on the Gallery Pages appear in a slideshow format. Possible? Ballpark cost?

Thanks!