One thought that I had is a 'Mach5' wheel:
http://www.devon4x4.com/products_a/c...-wheels/0.html
They are admittedly a steel wheel but are reputed to be reasonably light but very strong. They are made to order so you ought to be able to get any ET within reason. The price is ~£125 + VAT & shipping. The Land Rover pcd is 120 or 165 so 130 is within bounds as well.
Clive