Very nice tank and stand. I think in order to answer your question you need to think about what your vision is for the tank. Do you have a wish list of corals? Have you researched how they "typically" grow. Where do you place the stags? Where do you place encrusting, bushy, plating corals, etc.
After some experience you start to rethink coral placement. With less experience you can generalize from looking at other tanks on here, or asking people who have nice tanks their placement strategy. Of course flow and lighting have a lot to do with it. High flow vs low flow areas in the same tank will give different results. Bright light versus dim light will also produce different results.
Placement of corals is an art. In order to build your foundation you have to visualize what is going to grow on top of it. There are plenty of TOTM articles to start your research.