Do lots of research before spending money...especially on the biggies, like lights, skimmer, pumps, etc.
i would reccomend searching the build threads here on central. find a number of successful tanks and then see what makes them successful.. i think you will find often that it is not the equipment (though you do get what you pay for) but rather, how well that equipment was taken care of. Even the best equipment for our hobby turns to poop in a matter of months if not taken care of.
personally, i would suggest getting a few good books, so you may be able to set your tank goals and follow through instead of buying "this" and "that" because someone told you to or it looked cool. I cant stand doing lots of maintenance. Auto top offs. controllers, large sump and overfiltration allow me to do minimum maintenance on a day to day basis. i add top off water once a week (in the winter, less in the summer) and do water changes once every two to three weeks....so as long as snails dont knock too much over, i dont have to do much but empty skimmer cup and clean the glass once a week. But every three months, i clean the pumps. do a sumpover (just a thorough cleaning of the sump) and a basic check\clean on ATO sensors. So....you can make it what you want. patience and good planning are the best ways to proceed. If you want to continually mess with stuff and clean stuff and remove algae, you can. if you want to sit and enjoy a somewhat self-sustaining envirionment, you can.
good luck have fun. research research research.