Hi Sophie, the fact that you question whether you should get this bird tells me that probably you shouldn't. This bird does come with baggage that you may not be able to overcome and I would hate to see it have to go on to even another home.
If you have never had a grey before or especially if you have never had any kind of bird, don't get this one, opt for a baby grey. But a lot of them do not like to be cuddled especially after they mature, some don't like to be touched much at all.
I commend you for wanting to give this grey a home but you must have the bird's best interest at heart here and if you have doubts, then it may be best that someone who has experience with rehomes take this grey.
But whatever you decide to do, please keep us informed and if you do take it, we will help you any way we can.