In reply to jwa: Having used DMM Centre Alpines and DMM Brenins on a regular basis I think they are hard to adjust and a real pain. The Petzl Pandion is better the DMM Centre Alpine but is still useless for proper climbing and belaying as it lacks a belay loop. The DMM Brenin has a proper belay loop but that is about all it has going for it.
The best option is a widely-adjustable proper climbing harness with double waist buckles. That basically means either a Petzl Corax or a Mammut Ophir Rental both of which are superb fully featured harnesses.
As regards helmets I'd probably go for a BD Half-Dome or one of the DMM ones, but I can't argue against a Petzl Ecrins Rock fitting the bill in terms of being durable and adjustable albeit on the heavy side.