New Dually - Need Hitch, Toolbox, Rolling Cover Advice

I have the Revolver X4 for one year and have had no problems. I don't live in a cold climate which may make a difference in appearance. The tool box will have to be an under the rails tool box if you want to use a cover. Even with the cover rolled up I don't know if you will be able to open the tool box. The new trucks are high so you may need a small ladder to reach the items in your tool box. It would be nice if they made a tool box were the lid would slide towards the middle of the box.