Starting from the bottom is always better than starting from the top, though do be a bit flexible with your codes of conduct. And be very careful when using websites such as LiveAquaria as guides to place corals. Those websites are good starting points, but make sure you do a lot of research and rely on the more scientific sources.
For example, I found that Sinuous Bubble Corals (Plerogyra sinuosa) can do great in low or high lighting (not just medium as LiveAquaria suggests). The thing is to be aware that Bubbles for example, exist in both depth and shallows in the wild, however only those in the shallows have anti-UV factors that help protect them against the sun's rays. Putting them in direct light will do them no harm, but putting specimens from the dark in direct light can be very bad. Although the converse is not true.
So yeah, it is horribly confusing, though the above do suggest what has already been mentioned - start low, go high.