I don't think people would recommend soft white lights. Btw I would buy this light if I were you .

http://specialty-lights.com/960035.html

Someone was using this their whole grow and I was impressed with the results. Sell the one you have. I mean honestly don't expect your buds to be too fat with inefficient amounts of light so you're gonna have to sacrifice big bucks if you wanna go indoor and actually grow something worth while. I mean maybe you could, maybe some can..but personally, I don't plan on having an indoor grow op until I have everything perfect and in place with the right supplies.