You can grow all the way through with that light, especially if you've got the warm bulbs for it. Probably woulda been cheaper/better to get a HPS light and some cheapass CFLs bulbs for veg rather than the light he got, but what he got will work. You'll just end up with less bud per dollar you spend on electricity than you would with a HPS light. If it's just for personal consumption, not sale, then yield won't matter much anyway.