I'm going to be scaping my 5 gallon tank using a nature style approach. The dimensions of the tank are 16 3/16 x 8 3/8 x 10 1/2. I haven't bought any rocks or driftwood yet, but plan on finding some spider wood from the lfs. Before I go, do you think a central island layout, a left / back left triangular layout, or a left and right double island layout would look best? I was going to go with the central island, but I'm unsure if it would seem too large for the tank.