Because of shills and spammers this is now a link free zone. All replies with links may vanish without notice.

That done, such an app should be put into the usual RFQ format and then submitted to the now so many mobile app developers. You can try the freelance web sites as well.

Your top post omitted so many details that should be in the longer RFQ. If you don't create the detailed RFQ you will find out why it needs to be detailed as you move forward.

-> The one item that stood out as costly is the Ecommerce platform. That is a big item and is not trivial. In fact that should be some web site you have already.