Good luck with your tank. While you wait to add the fish it will be an extremely beneficial time for the tank. Add some live sand and rock from other hobbyist's tanks and maybe a handful of macro algae and your clean up crew (snails and hermits etc). Be sure to feed the clean up crew a little and all sorts of life will have established itself by the time you get back.
It also sounds like a great future tank for a copperbanded butterfly. You have to be careful to get one which is small, healthy , and eating, but in a quiet tank like yours will be it would do great. You can not keep featherdusters with them, but other than that, mine have proven to be perfect reef citizens.