It would be a logistics nightmare plus not to mentions you'll have to export the technology to Venezuela because I'm sure GPUs are way more expensive there... to start...how many GPUs / GHash are we talking about here?
My minimum setup is 30 rigs of 4x7950 each. As the marginal cost for each additional rig is $0 (just a linear increase of electricity), I hope to have many, many more. I'll probably create a thread about my plan after I vet it out with some business dudes in the next week or so and get rid of my noob-status.
You need to determine the wattage you'll need, the kWh consumption, the cooling requirements (natural/artificial and winter/summer) the amount of phases you'll need (no idea about amperage and how much each phase supports).
Also, difficulty increase overtime, forecasting in the BTC value (those last two factors are an unknown) and ultimately, ROI and profit.