A investor pretends to buy a warehouse for 300,000 in cash and then build a distribuition structure. After 2 years he plans to rent it for 20,000 yearly ( all rents are paid antecipated at the beginning of every year) during 4 years , and then sell the distribuition center for 350,000. Considering that there will be no default and that the attractiveness rate will be 7% annually. Should the investor make the purchase ?