Given the relatively rarity and good maintenance of your vehicle, we would suggest selling your car through a Land Rover owners' forum or club, as you will likely find many knowledgable and enthusiastic fans of the brand who will appreciate your example. Valuing your car is more difficult, as it very much depends on condition and demand for this particular year and specification, but again you should find that members of these forums and clubs will be able to assist with this. You can also look for similar examples for sale to gauge current prices.