I have been using SketchUp for a few years and have a little experience with FormZ from my school days. Now I would really like to expand my horizons by learning SSD modeling with Modo in particular. I've been through the videos of different tools in Modo and started a tutorial which is really long, but now I am doing a little 3D project for a friend and would like to take the opportunity to really get my feet wet.
I need to model the following chair and have started a few times, but am really not sure of so many options that I am feeling overwhelmed.



(Overall dimensions for the chair: 30"x28"x30")
Don't know if it makes more sense to do something like this in SubD or hardedge, don't know how to curve the back and then extrude it... In short I am too stuck in the SketchUp way of doing things to get into this.
What I would love is for any of you to give me a little "I would start by doing this..." or "I would recommend HardEdge/SubD because of...." type advise and we could walk through this together and in the end it could serve as a tutorial for others who might find themselves in a similar position to me.
Any and all help much appreciated!