If you are on a budget then the led panels that youbuy on ebay are an awesome deal, about $100 a pop if that. Just make sure to get a dimmable model.
Hey X, I have to disagree on the "old" asm skimmers, maybe I have an uber one but mine pulls an immense amount of gunk outta my 180g and I have never had an issue with it overflowing or going wacky on me like with the reef octopus ones. lol I do have a big asm model but I still think it's an awesome piece of equipment.
AS far as corals.. look on some sites and see what you would like to keep, whether now or in the future and go from there as far as lighting. Always anticipate for the future so you dont have to buy twice. And as Mr. X stated, DO NOT go with the cheapest option as you most likely will have to replace it at some point. In this hobby quality is key not the price. A great deal isnt always such a great deal, I have found this out first hand.