Channel Islands
You could route vis SAM they are usually helpfull but the route you have is hardly any more distance. I think you would be better talking to Farnborough West 125.250 they can get you through Odiham and Farnborough. If you try Solent on the way past 120.225 they can sometimes hand you over to Jersey Zone or just free call them before 50 north. As has been said already watch out for traffic coming the other way.
Pete