Your light will be the largest expense. You will want to invest in a good one since your planning to grow corals. how wide is your tank? I bought a 24 inch nova extreme t5 light from fosters and smith.
Next you will need to not worry with live sand, most of the time it isn't live by the time you buy it. You will want to shoot for 20 lbs or so. cant remember exact number. someone plz verify. get 20 lbs of live rock or as close as you can comfortably get. Leave open area all the way around your rock for easy cleaning.
You will also need a water test kit, get the drops, forget the test strips
For a filter i suggest an aquaclear hang on back, or HOB
and fill it with live rock rubble. When i ordered my live rock from F&S it came with plenty of rubble.
Maybe add a Hydor Koralla
for extra flow. Buy a bucket of salt and a refractometer, skip the swing arm hydrometers. Go with a fishless cycle. This is just a basic off the top of my head list, not meant to be the end all guide. hope it helps