Not bad your version, if you do without the bidet.
Personally, in this case I would also place the toilet on the left wall. Normally, 25 cm is recommended on the left/right of the toilet, but you really shouldn't go below 20 cm.
If you then extend the masonry wall of the shower a bit longer, it still won't be enough as a pure walk-in solution. I would actually consider a door there, but leave it as a masonry wall for the towel radiator or something similar. The wall next to the toilet then at e.g. 120 cm and glass above would loosen up the whole thing and provide light.
I like it :)