Sorry Mamm, but those MV hid's wont help except to bring n unwanted heat. Do you have a Lowes, Home Depot or a Wally Mart? If so, you can get some CFL lighting from them for fairly cheep. How much can you spend on lighting? With that grow area you will need a fare amount of light to cover it IMO, but I am sure you will get some ideas from hear.
Adieu