Some Beginner questions (weights, trailer length, etc.)

hitch capacity or payload will be the bigger issue more than the trailer weight, for the Range Rover.
also, with that short of a wheelbase, look at a Hensley or ProPride WDH.
and don't make the newbie mistake of believing brochure/website "dry" weight numbers. those are only for a stripped-down trailer and not real world numbers.
start with the trailer's yellow weight sticker number. that's a much better number to start with.