hahah alright guess we will try cellular modems
That is a much better idea, and very workable. Here is something you can do. If the computers that need to be connected are in the same area, just far from the base station, you can get one cell modem, and a wifi hotspot generator that will create a WiFi area of coverage using the cell data service. So if you have a few computers/other WiFi devices within a few 100 feet of eachother, you can feed them a signal from one modem.
I'm only guessing really at what you are trying to, but it does sound like fun. I never get asked to send a WiFi signal across several miles of mountains.