Low pressure shower head with swivel joint

Hello all
I am looking to replace an existing shower head that is fitted to an arm that comes straight out of the wall.
It is a bit high so an extension or a fairly narrow spray would be good.
Needs to work on about 0.2 bar (about 7 - 8 feet head of water).
I do not trust the existing plumbing or waste to cope with a power shower so unless I completely gut the bathroom I appear to be stuck with a low pressure shower and a fairly slow waste. Bathroom is at present well tiled and lifting the floor would destroy it. One day.......
Thanks in anticipation for any advice
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