Originally Posted by
Reverserbucket
Deadpool
The best advice I would offer you is to obtain US Citizenship. This would give you options if you do decide to return to the UK and things don't work out or you ever want to return to the US. A Greencard is only of value to you if you wish to reside permanently in the US. Much more opinion I could give based on my own experience but firstly, establish a right to return unless you are absolutely certain you won't want to go back.
As an Englishman living in America (and not a citizen myself) I would wholeheartedly agree with this advice. Your Green Card is only good while you're permanently residing here. It's easy to overlook this.