Start all over again and forget about all the DRY weight numbers you posted. Also forget about the tow rating of your truck. It's not nearly as important as the Payload rating...
To get correct advice, post the GVWR of the trailers you are considering. Lots of experienced members here on the forum and start to give you good advice...
"If we couldn't laugh we would all go insane."
Arctic Fox 25Y
GMC Duramax
Blue Ox SwayPro