biowheel = don't use this for SW . It's a nitrate reactor.
You need live rock, they will do the best bio filtration. Take some porous, light one. Tokota, Fiji (premium), Vanuatu, Sulawesi, Tonga (on the top 'cause it's fragile) are all great. For the lighting, it depends if you plan to keep corals. Might want some good amount of sand if you plan to have a deep sand bed that helps filtration..or you could go bare bottom ( no sand at all, rocks placed directly on the bottom, easier to clean but less appelaing ). You need great water movement in a SW tank. You might wanna check Seio pumps, they have wide flow, the corals prefer that compared to a direct, powerful flow. Fish food...mhh..dry one ? Mysid shrimp frozen seems to work on many carnivorous fishes, high in proteins. Test kits..keep in mind that a cheap "all in one" test kit mays have atrocious readings, therefore giving you bad info and after that you might change your parameters and mess all up.
You might wanna have a RO/DI unit system, if filters the water before it gets in the tank, reducing the risk of polluting the tank with unwanted metals, chemicals, even phosphates. This is pretty much a must. Around 150$ you can get a decent unit, 5 stages. Those units are used for consommation, so they'll often include a 6th stage but dont' use this one ( the odor and taste remover ), it leaches phosphates (po4).
The prizm protein skimmer isn't great for a 100g tank, even a little one. But hey, keep it a while, until you wanna try a real good one, if you have a big bioload ( many fishes, many crap in the water ). Please don't skip on the live rock, it's the best way to have a stable tank. You need a heater too. 300w Ebo-Jager can do the job, altough you can try the Titanium ones, they can't break easily.