I second msbeanctr skimmer advice. The skimmer you have picked out is a piece of garbage. Do a search on this forum for protein skimmer in general hardware or something and you will find a dozen threads talking about good brands of skimmers
I find that prepacked sumps like that are marked up at a premium price. You will probably save a lot of money and be much happier in the end if you do a little research and make it into a DIY project. It really isn't that hard.
The lights you need for your tank will depend on what kind of corals/anemone/clams you want to keep in your tank. anemone/clams/SPS
corals will need much more light then most softies and LPS
corals in general. Give us an idea of what you want to keep and people will be able to help you better with what kind of lights to get.