i of course have no idea what you plan on spending, nor do i need to, but it is often that that size range is seen in the used market. i would be scanning the local papers and websites, sometimes amazing deals include all you need to go reef from the get go.
i have a friend who bought a 125g plexi. w/skimmer, chiller, 3- 175 MH, 4 vho, stand, sump and canopy for $250. (divorce sale)
you won't likely find that but who knows.