I don't mean to discourage you, but buying lights is a drop in the bucket of the financial punch in the face that is starting a reef tank.
If you want a reef tank research all the costs, (overflow, sump(could be your 29 with a little work), skimmer, liverock, livestock, coral foods, buffers, etc) and then decide if it's right for you. You can't just dump a bunch of salt in a FW community tank with good lights and expect it to be a reef system, it just doesn't work that way.
If you're having to chose between a reef and a FW system for financial reasons and aren't comfortable building your own gear, don't look twice at the reef, when blue planet comes on TV, change the channel, it's for your own good. If you do switch over and can't get it together with decent gear you're going to wind up with a halfassed mess that you'll wish was a nice FW system.
Not to say you can't put a slick T5 fixture on your existing tank, there's absolutely nothing wrong with that.
