See my brother in law has a Dark Green one and he has coded the handles, mirrors, front grille and the A and C pillar covers and it looks fantastic, but when I look at the Kahn cars in silver and they code it all I think it looks too much.
http://www.projectkahn.com/Gallery/ <----- go to Range Rover with RS-C on left and then Silver car on far right to see what I mean.
I like the darkness with the windows giving that whole floating roof effect, but I think maybe the handles and grille and mirrors would be ok..... just need to check first with the photoshop gurus hahahaha
Your plan is good, my angle was she gets Rangey and I get a new R1, had it 4 weeks here in NZ but the roads are SHIT

would have fallen off in 5 minutes so I sold it again and bought a Yamaha YFZ 450 Quad, that way I can go mad and if I fall off I jump back on hahaha, plus I can tow it with the Rangey