T5/LED DIY suggestions wanted

[LARReefer]

I have an 8 bulb ATI T5 setup and saw a guy in here had taken out a couple of bulbs and put LED strips in there. I was thinking of doing something similar. I have a 60g ~36x20x20 that is 95% SPS. My plan is to remove 2 T5 bulbs of the 6 bulbs ballast and replace them with LED strips, probably something like this with a heat sink 9http://www.rapidled.com/servlet/the-57/48-Ultra-Premium-LED/Detail). Would this be over kill? I not sure how many LED's would be appropriate to go with 6 T5's any suggestions would be great.