I think you will need the ball joint off, otherwise you have to yank the cv into an abnormal angle to fit it in with a risk of one of the ball bearings popping out, guess how I know lol
SKF are usually decent, shouldn't think you'd have any problems from it.
That happened on my golf when I had it, made a hellish noise on corners lol.
For the ball joint just hit the hub carrier around the ball joint with a hammer, a few sharp hits should knock the shaft of the ball joint loose. Don't hit the ball joint itself though.
Disconnect the main bolt of the ball joint and leave the 3 13mm ones alone then yes.
There's room for movement with those 3 smaller bolts but not with the big one. So if you just disconnect it the alignment won't be affected.
No need to rev up in gear on a ramp, just stick it in 1st, hold the revs up a bit and let the clutch out till it bites and see if the engine moves a bit much.
Or even just grab hold of the top of the engine and get violent on it lol. Soon see if a mount is bad
Open the bonnet, handbrake on, select 1st, let the clutch out till it bites and watch the engine, see if it moves excessively.
For the flywheel listen down the bottom front at the bellhousing, get someone to give the throttle a rev and let it go, you often hear a knocking from the flywheel as...