I keep my greek on my balcony of my condo and the ground is made of like a rough coating on wood. it is about 20' X 6'. he has a dog house full of moist coco dirt to dig in and this spring when he goes back outside, he will have a 4' X 2' tub with grass growing in it to walk around on and graze. is this setup suitable for his needs? anthing i need to add? and yes he has access to water.