If I remember right your tank has a wet and dry filter in the hood?
Things to consider:
Are you going to have a reef,live rock and corals, or live rock only or fish only?
What lights do you have?
Lets assume you want a reef, you will need live rock for the filtration, which then renders your hood useless except for the lights, whic I hope might be t5?
So, then we need coral sand, consider a skimmer and decide if you want to buy your ro water or make your own?