Just to reoterate othe posts. Plenty of time, stay airside and use the the free airside bus between terminals. I can understand why you think it's difficult to get around but just take it easy, no need to rush or stress and just follow the signs. There's normally plenty of staff around the Flight Connections Centre too so if you do get stuck there should be someone close at hand to assist. There's often a long queue as the Flight connections security but it does eem to move faster than other security line I've been in, strange but true.

Enjoy your trip.