Then it doesn't matter - you're predicted AAA. Don't waste your energy trying to do a whole A level in a year because you want to do 4. You only need 3!
Your better off, sticking with your current 3 A2's, your not applying oxbridge or LSE are you? Because if you are ICT is on blacklisted. Psychology is also a lot of work, doing AS and A2 in a year would be crazy.