Saw the other project and based everything off of that. I made some adjustments on the shelf side to ensure I could lay down 3 layers of 2x6's without it hanging off too far. At first I wasn't going to go with the rail shelf system, but I couldn't find anything that I liked at the store to make actually shelves. I did cut a 2* angle on the bottom and top of the shelf framing. I figured if I put enough weight on those shelves, I woudln't want it messing with the frame of the cart too much. On the bin side, I decided to just do different heights instead of angled because I know I'll have plenty of 3' plus. I chose to put a scrap bin on the end for anything smaller than a foot. Many of those joints were done with my Kreg setup, but not all of them. The last fix I did was add a 2x4 to the insde of the shelf frame. This was to move the shelf hangers in so that an 8' board wasn't just edge to edge (I found that to be a problem when I put some of the 1x4's on there...they would be on 2, but not always all 3). So moving each side in around 1.5" gives you about 3" to play with as far as 8' lumber goes. This enabled me to turn my old storage into bench and shelves and I'm ready to get moving on projects!
