The dump trailer might work, only issue I see is the attachments. You'd have to load them all from the back, and shove them to the front of the trailer and park the machine behind them. You might have a hard time strapping them down, and when you go to unload them you would have to either dump them with the gate shut or drag them back to you with a chain. You might make it work, see if you can borrow or rent one and try it. DOT is funny about having everything strapped and chained down, and it gets tough with a dump trailer. Any D rings or anchors on the inside will hang up your logs when you dump.
If you can find long enough trailer ramps, you wouldn't have to dump the trailer to get your attachments, you could drive up in there forward and pick them up. Handling those ramps would suck though, you'd have to remove them to dump. Good luck, you'll figure something out. I finally ended up with a backhoe type trailer and a small dump truck.