Hi there. Can you tell me more about the extension you want to make, or better yet, the end goal of it? Do you have a design for it? Wireframe? Will there be a connection to some server or all the business will be done locally?
Also, when do you plan to start this project and when is the deadline, if there is one?
Anyways, feel free to hit me up so we can talk more about this. I am very responsive. All the best