I got the coils out of my BMW basically by doing that.
Jack the car so the wheels dangle.
Jack under the shock bolt (can't recall if the inner our outer wishbone joint was best).
Undo the shock making sure the bolt was easy to get out (indicating no tension).
Lower jack noting any pipes etc that may get mashed.
Once free of the shock the spring often just pulls out in cars, as it's almost detensioned.
Before jacking you can loosely fit spring compressors to stop it expanding that last bit of course.
What could go wrong?