You don't need much bandwidth. The Internet is creating a false sense of data size because nowadays even a simple hello world seems to require a multi-megabyte download. But actual communication for practical purposes can be done in just bytes. There's more than enough space in transfer title to communicate a lot of stuff, even without a pre-arranged set of shortcuts, and in planning stages, you don't need real-time communication anyway.
(Note, this comment would fit in one or two bank tranfers).
(Note, this comment would fit in one or two bank tranfers).