Check with insurance company about a repair estimate ,they usually give you a choice of shops they use that way you are not spending your money and having to battle to get reimbursed.If you take it down yourself make sure you document your expenses ,gas trailer ,by the way your trailer may need to be looked at posible your truck hitch ect .
Got a frame shop that works on older stuff. Good advise on documenting all expenses. Trailer is totalled, frame bent. Here's photo of the hitch, never seen a 10,000 lb hitch bend like this.