The described project is a building an industrial Data Center (mining farm) with placement of equipment for the production of crypto currencies.
According the project cash-flow, the minimum level of investment return ROI is 30% per annum. Payback period of whole project (equipment + infrastructure) is 9-11 months.
The price a coin is not fixed sometimes increases or decrease. maybe when the price an increase, ROI can be corresponding with a plan or can also faster from the plan. but when price a decrease, that's become a problem. and for equipment especially a GPU can't a prediction how long the GPU will run, moreover those running 24/7 and the most difficult is convince Investor, partner and customer to your trusted the project.