This is not a dangerous job if you go about it the right way.
Jack the car up and support the body on solid jack stands.
Remove the wheel and then put a good quality hydraulic jack underneath the control arm.
Go about removing the strut.
Replace the strut mount.
Use all new bolts that are provided with the new Bilstein strut and strut mount.

The spring will not come off even if the control arm is extended as far as possible. The spring is too long. Just be carefull and support the arm. If the axle slips and extends as far as possible you will ruin the rubber bushings - ask me how I know.

You can do this job in 30 minutes. The hardest part is undoing the lower bolts on the strut if they are corroded on.

You need to use the proper spring compressor if you need to remove the control arm.