Dizzy disaster

My dizzy was rusted to the engine and when I managed to crack it free it cosmetic all the way out and therefore I messed up timing. Can anyone advise me how to put the dizzy back in the right position to get the car started ? When I put the dizzy back in the car wouldn't start as timing has gone way out.

secondly will this only have affected the ignition timing or should I get the cam etc sorted at the same time ?

many thanks 

rotate engien to TDC on cam and crank, then refit dizzy so the rotor arm is lined up to the notch in the dizzy housing, fit spark lead #1 where it is pointing and the rest in correct order 1342 clockwise