Ignore dry weights, nobody camps in an empty trailer. Use the gross trailer weight for all calculations because even loading lightly you will be very close to that number and trailers get heavier with age. We tend to add new things we want to bring but seldom leave others home because we might want that item at some point.
Multiply the gross trailer weight by 13% to get real world tongue weight numbers. Most manufacturers use 10% because it allows the most vehicles to tow their trailers. Same reason they use dry weight to estimate tongue weight. 10% is the point where sway is becoming a real problem and most people do not have good experiences with that low of tongue weight.
Yes, you probably will be at 1000 pounds or more but since I do not know what your gross trailer weight is I have no idea. Some manufacturers leave all sorts of things off the trailer when weighing to get "dry" weight such as AC, awnings etc. so the trailers true dry weight is often a few hundred pounds heavier than the listed dry weight. Never believe the brochure, they are just an estimate.
2020 F28 RKS Titanium
2017 Creekside 23 RBS Sold
2016 F250 Super Crew XLT Overworked