im not a very big fan of prizm skimmers. Something for you to look into would be getting an AquaC remora skimmer or even a coralife. I had good luck with the coralife model Hang on style and no experience with remoras, but have heard very good things.
We need to know a lot more about the lights. Preferebly what type, Compact, T-5 basic or good old Flouro's. My guess is compact, and your not going to be able to keep very much with it. First and foremost your tank is deep, much deeper then PC's will be able to penetrate with usable light for corals. With that said most of your coral will have to be mid tank or higher, depending on what you get. Stay away from SPS as you do not have sufficient lighting for 90% of there needs. Some LPS corals may not fair to well under those types of lights either but everybody has different experiences. Keep in mind that if you really want a good reef system, then lighting is a very high importance and doing a lot of research of corals and types of lights will give you a better understanding of what you'll be able to keep. If you have any questions i have a ton of articles i can find for you and i can also share the basic differences and the average output of each light, types of corals that do best with those lights, etc.......
Try adding a few more power heads. Im a fan of the koralia models but mainly any power head will work. Something nice about Koralia and other similar models is the spread of current vs. being so direct.
the canister will serve its purpose just fine, however care should be taken about your maintanence. Cleaning the filter often will prevent any huge increase in nitrate. There known to be a Nitrate "bomb", meaning that with laxed cleaning, they will slowly increase your nitarte until its to a level that start effecting your fish, corals and inverts.
add a lot of Live Rock, for a reef its a good idea to have at least 1.5 lbs of LR per gallon. IMO shoot for 2 lbs per gallon, this will give you better biological filtration and more hiding holes for those smaller nervous reef safe fish you may be getting.