Would like some opinions on the above please :) in the meantime i am purchasing necessary tools to get the job started but would like your input if possible.

1. how accurate of 1800mm straight edges and if someone can recommend one if the cheap ones are no good.

2. is bigger the better for the engineer squares? seen some 300mm ones but are nearly £100 each

3. anything else you recommend i should buy to make things easier on the way?

I know you guys are probably sick of hearing from me now lol but things will actually be getting done once i have ordered the necessary tools.