I am surprised that no one has discussed whether or not to leave the intake system on the head while removing.
On the later 104 engine, it is common to leave the intake in place and remove it with the head, then remove the intake from the head on the bench. On the 103 engine, I believe it is easier to leave the intake in place. This decreases the number of old, brittle connectors and such that may be broken during disconnection/reconnection.
You will have to get underneath the car to reach some of the intake bolts, but they're not that bad.