NLS (New Life Spectrum) is the BEST. I love the stuff....the fish do too of course. I use the "General" NLS and feed every tank with it. Discus, Malawi, Tang shelldwellers, etc. They all eat it and can't get enough of it. At this point its the only food i will ever buy.
Agreed on the Lelupi being the biggest worry in the future. But sit back and enjoy for now.
The growth rate is on your side with this tank.