Hi, i hope u read about this hobby before u decide to step in. First of all, marine tank is not as simple as fresh water. Lots of patience, time and effort is needed. 2ndly, although is good to get 2nd hand items, but raise your budget so that u can get some decent items.
my advise is go for 2 feet with sump tank. get a proper skimmer, chiller is a must if u plan on keeping corals, no point using fan. u will top up water till u go crazy. for stand, dont get those metal ones. u will face alot of headache once rust set in.
if u are not in a rush, camp in the 2nd hand market. there are times when reefers upgrade and sell off their current set up at good price.
last but not least, if u planning to go on low budget tank, my advise is dont even start. this is not a cheap hobby.
above is just my 2 cents worth. feel free to pm me if u have any questions about starting up this hobby. took me few years before i really went into this hobby.