It really depends on what you want to keep, if you want sps or clams go with a 250HQI setup, the pendent really helps with heat issues.
250HQI icecap ballast
250HQI 10K aqualine lamp
sunlight supply reefoptix III+ pendent
Now if you want to keep softies/ lps and maybe some montipora like my #2 tank I would go with a 150 saki 50K setup. I really love the color of the lamp if it really makes it so I can keep everything except sps, with the exception of montipora.
150 PFO ballast
150 50K saki lamp
reef flector and mogul.
One last thing to add, if you don't already have one...get a sump first off. On smaller tanks they are invaluable. Not too mention you will need one when you decide to get a calcium reactor, which you will trust me
HTH
Here's a pic of my 29 sps tank....this is before I put in the sump.