Yes, use the yellow sticker UVW 'cause that includes all the options.
Lance and Trailmanor (my trailer's manufacturer) are pretty bad in that they don't include any options in their catalogue weights. Even if the "options" are standard/required. So the real weight can be 500# heavier (or more) than the catalogue UVW weight. Many other manufacturers are better.
But to estimate our future trailer's GVW, I don't use the GVWR, because some manufacturers, such as Artic Fox, have huge payloads 3000-4000#, way more than we will use. I start with the Yellow sticker UVW then add our personal payload.
We typically pack 1000# when we go to Florida for two months. When I go by myself on shorter trips, that drops to 500#. That doesn't include water, just stuff we've accumulated over the years. With time, you'll figure out what your personal payload is. It does tend to increase over time so plan ahead.
