Comfort on the deck

This deck furniture was made using construction grade 2 x 4's and the simple plans from Ana. The cushions were purchased at Kohls. They were on sale for just under $25.00 each. The cushions are made for chairs, but this seemed to work well. The short bench is 4ft long and the long bench is 8ft. I altered plans slightly by adding center support on long bench and adding a couple supports on the back. The back rails and end arms were raised a little higher. Made them 30". May be a little too high? My wife is going to make back pillows and a corner table is to be added later.