What are the tank measurement? Depth being your most important. As for a lid and light, u can choose many options to lighting and possibly keep it an open top or have a piece of glass cut for the tank. They normally run $20-$30 at a glass shop, just give them a template. As for the light, you can use a clip on or hanging led
or a pendent mh
light. All depends on what coral you'd like to have. Just keep in mind the deeper the tank, the stronger the light. You'll also need good water movement so map out how you'll lay the rock and where you'll put the power heads.