The headlining isn't too much of a problem, you peel it down from the middle after removing the plastic trims on either side, it's held in place with double sided adhesive pads and folds back enough to do the job.
Like all modern cars the trims are held in place by plastic pegs so just need a bit of careful levering to get them off.
The most difficult bit I found is getting the circlips off the inner end of the struts because you're working upside down and can't get a clear view, I chucked the pliers aside and prised them off with a screwdriver in the end, they buckled a bit but were easy enough to re-shape and pop back on to the new struts.
You'll need some muscle

Anyone who has never made a mistake has never tried anything new. (Albert Einstein)