Two options maybe.....
If there was enough insurance and if they are even available get a replacement cab from Stern. If you manage to find a decal for the cabinet the whole thing really needs to be re-decalled otherwise it may look a bit odd if only one side is done.
Get a quote to repair the damage, get the money back off the insurance company if they will give it directly to you and take and the money and run. I really feel for you but at least the damage is only cosmetic. The money from the insurance company may offset the amount of money you lose on the machine if and when you sell it as is.