Fun project! Started with rough western red cedar which I ran through a jointer and planer to get good lumber.
I made a few changes to the design. I used thinner seat boards and cut a leaning tilt in the backrests. I also added 2 boards on the back rests.
I used all pocket holes to hide the screws. Once they dry out I will seal the sectionals.
Got a full set of cushions on Amazon for $300. Total for this project was around $700. Not too bad!