I like the hardscape a lot, although I would have recommended a few smaller stones (Soeishi and Suteishi) to compliment the larger set stones (Oyaishi and Fukuishi).
Plant selection is very good, although I feel that with the extra stones you may have helped absorb the overly "GREEN" and texture of the scape. Needs to have some kind of break between the very defined color and nature of the stone to the very green fine leaved plants you have used.
An excellent overall project and I look forward to seeing it mature. Good luck with it.