Need great ideas for a Japanese type garden?

[poynergoatco]

I have created a new area in my back yard and plan on putting a large Asian statue in the center of this area. I am working on an area behind where the statue will sit to plant bamboo in a controlled area. I am fixing a sort of tunnel and plan to put wisteria on it, to grow over the wire tunnel. I would like ideas on other plants to use in this area to enhance the statue and give an air or serenity. This will be a sort of *secret* garden, as you won't be able to see it all until you go through the tunnel.

I have thought about some peonies, and plan to use white gravel and have black enamel benches in it. I would like to use reds mostly, to give more impact to the overall effect.

I am in zone 6