Double cardon jointed propshafts arn't essential for lifted motors
if you have front castor correction then you will need one.
If not, just get a decent wide angle propshaft.
£80 is fair for a propshaft but you can get a GKN wide angle version for £125 from any decent supplier.
What engine/gearbox have you got?
There's lots of different length shafts you can use, no one prop will fit correctly
The fact that the prop's you linked arn't balanced isn't good either.
Do some research before spending money on prop's. There's nothing worse than spending money on goods that turn out to be wrong or poorly made
:-.