Rowing an E
The 156 E series rows great in multi day configuration. It is better suited to rivers like the Rogue and Middle Fork but is fine on most rivers. Its load capacity is limited compared to other 16' boats and it does not perform well when close to, or over, the published limit. The distance between the frame and top of the floor is small so your box and cooler will ride high above the tubes. The design is unique and it took me some time to configure the frame so the boat is balanced properly when loaded. I would not order a Bighorn 2 and expect it to work although I haven't looked at frame's specifications. Some frame set up hints.
Place the oar towers toward the center of the limited flat section. I have mine perfectly centered with the middle d ring. In that configuration I have 3 bays because of the short flat section. From front to back - 3 bays - cooler, rower's bay, dry box and I sit on the dry box. My frame is 69" wide, center to center and about 60" long. I have added a 4th bay in front of the cooler. It is a 65" piece of 1" aluminum pipe that rides on the rocker, not on the flat section, and supports a drop bag. I have a custom (strong) table that rides on the tubes above the drop bag. I put 2 pacos on top of the whole mess. In this configuration it rides level and rows great when loaded. Good luck.