Yeah, the Canadian Kubota site had specific weights(+owner manuals for download).
Bare tractor: 3571lbs
LA1055: 1400lbs
HD Bucket: 400lbs
5371lbs total + 1500lbs trailer = 6871lbs.
It's definitely close but since dealer is doing delivery most of my hauling will probably be local so I'm okay with it.
I believe I am correct saying standard bucket is around 300 pounds, L2296 HD RB bucket is around 400 pounds, so 100 pounds DIFFERENCE.
Do forget to allow for fluids: engine oil, hydraulic fluid and radiator fluid.