I too am setting up a tank soon like yourself, and from my research I'll try and help ya out
1. I'm not terribly versed on skimmers, but that one looks nice
I'd check out ebay before you buy most equipment from stores... you tend to be able to get it cheaper in the US that way.
2. Lots of light. I'd decide on type first if I were you. Either Compact Flourescent (CP) or Metal Halide. Halides are the cadillac of lighting. You get lots of it and real good quality. Downsides to them can be excess heat, they're a little power hungry, and expensive. From what I udnerstand though you cant get better lighting. CP isnt as power hungry, not quite as expensive as halides (but still not cheap), and makes both less heat and less light. Most people regard CP lighting as the moderate quality lighting. You can get away with most corals/inverts with it, but some may require halides.
3. CP
4. You CAN buy canister filters, but most people around here (myself now included) reccomend using LR and in-sump macro algae to filter water. Canisters, biowheels, and other bio filtration common in freshwater setups can be nitrate factories which is toxic to fish. There are but 2 ways to remove nitrates. Grow algae in your sump, or regular and sometimes frequent water changes. Growing algae in the sump imo is safer and more natural over the long run for a mini ecosystem.