Hitch weight 2008 Classic
in the document archive it shows 670 lbs for your trailer. This is without options or fluids. They now carry propane weight in the hitch calc. but don't know in 2008. You should at least consider 670 for a minimum hitch weight. And IMHO, your hitch on your tow vehicle should be rated for 1000 lbs.
We currently see that what they publish for hitch weights is lacking.
What your plate says is correct for your trailer and you should abide by that. Where the 8,000 you found is dubious.
Base weight and gross weight are different. Base weight is less than gross weight and without options included by special orders, previous owners or yourself.
NCC (Net Carrying Capacity) is what the limit you can carry in the trailer minus the options.
How to figure this is to bring your trailer to a scale completely empty and weigh it. This will be your new base weight.
Then subtract YOUR base weight from the GVW and that is YOUR NCC.
If you put a hitch on it, then subtract from your NCC.
The hitch opinions her will vary as to type and mfg. It will be you choice to as to which one you would prefer and work well for you.
It will depend on your tow vehicle for sure. But the hitch you chose will be required to handle the GVW of your trailer, which is 10,000 lbs.
Good luck in your search.