In reply to higherclimbingwales:
You sound like a punter!!
Maybe you'll need this too
http://www.ukclimbing.com/articles/page.php?id=5714
Just get plenty of ascent in. Aim for a few thousand metres each week. The more the better. Do some big link up traverses scrambling and moving fast. Snowdon horseshoe from Tryfan North ridge etc.
Climbing wall will be pointless.