Trailer Hitch Questions

Hi everyone,
I have some questions regarding my plans for the A-Frame portion of the frame for my upcoming 10' Cubby project.
I am planning on using an Atwood Style A-Frame coupler and an Atwood A-Frame Jack for the trailer hitch.
I also want to mount a locking box for a very small generator (Honda EU2000i), a 40 lb propane tank and spare tire on the A-Frame portion of frame.
Has anyone done this before? I am concerned that there will not be enough room and I am also concerned about how much weight I am putting on the hitch of my car (I plan on towing this with my Nissan Altima).
I also want to know what angle the steel needs to be at the "point" so the coupler fits properly.
Your help is greatly appreciated.
I have some questions regarding my plans for the A-Frame portion of the frame for my upcoming 10' Cubby project.
I am planning on using an Atwood Style A-Frame coupler and an Atwood A-Frame Jack for the trailer hitch.
I also want to mount a locking box for a very small generator (Honda EU2000i), a 40 lb propane tank and spare tire on the A-Frame portion of frame.
Has anyone done this before? I am concerned that there will not be enough room and I am also concerned about how much weight I am putting on the hitch of my car (I plan on towing this with my Nissan Altima).
I also want to know what angle the steel needs to be at the "point" so the coupler fits properly.
Your help is greatly appreciated.