The ways in which food and other material items are collected is called a system of production. Specifically, the manner in which a group produces its food is referred to as a subsistence strategy. In a capitalist system, money is the key to production.
If you want to add in a dry pipe system, add in another $100K. $600K-700K rough estimate, which puts you at about $500/sq/ft. But do your home work, beat the street, and you will find pre-conditioned data center space that is rough around the edges and you can bring operational for $100-$200/sqft. So at a cost of about $700k that works out to be 17.5k per cab.
The average data plan costs around $25 per month, for a limit of 2 gigabytes a month. This counts for both up and down data. Beyond that, you pay around 10 cents for each additional megabyte that you use. Unlimited data per month would make you happy had it not been very expensive.