If you want to have adjustable castor on your front wheels, what I intend to do is set up an adjustable castor rod - IE. Cut a piece out of it, and have like a tie rod kind of setup there. Land Rover Discovery Series 2 and Range Rover HSE (95 - 2001) have a male to female threaded piece (alloy) about 5 cm long in the drag link, which is used to adjust the front wheel toe in/out. Once you first set your castor up properly, you would only need to mark it then adjust the same amount of turns on either side.
I am currently trying to work out the best way to adapt this for use in this situation - and also maybe for an adjustable rear strut brace, so that I don't have to spend $200 on the whiteline one.
As far as camber goes, I'm thinking about it, but haven't had any revolutions yet.... Unless you could modify the mounting point for the lower control arm, in such a way it can be slid towards or away from the centre of the car.....