Buy the floorplan that suits you, that's more important.
When you have enough truck and it's hitch is set up correctly , the small differences in TW becomes a little less of an issue.
Those weight numbers will change once you load it up with your personal stuff as well as the trailer options. I don't pay attention to dry weights.
Take it to a scale , weigh it when you load it all up and you are able to move things around in the trailer for proper weight distribution.
Sometimes you have to use straps to secure things and always try to pack things the same way. I use my phone and take pics of my packing plan.
Your hitch has adjustments to make things feel or ride better. This should be done at the dealership when they fit your truck to your trailer. It should all be set up for you correctly.
After that is all done , the loading of the trailer should be a conscious effort by you . Try your best to pack things evenly distributed, to compliment the original hitch set up of your combo.