small en-suite wetroom design

[nick9one1]

I'm renovating my en-suite and have pretty much settled on this design.
It will be a wetroom tiled floor with a flush shower form. I'm Bringing the back wall in 200mm so there can be a concealed cistern and a concealed shower valve.

Do the dimensions look OK for general day to day size/usability?
My main concerns are the toilet only has 15cm either side between the wall and the glass shower screen.

Also The form I have bought is 1200mm long. There will only be one glass screen. Could splashed water reach the door and potentially find a way out of the wetroom? there will be about 1800mm between the shower head and the door

how it was

 

[cross thread]

Can you get the fall on the wastes ? Design looks ok

 

[nick9one1]

Can you get the fall on the wastes ? Design looks ok

thanks.
Yes I should be able to. There is a 110mm waste that runs across the back of the room below the toilet and existing shower.
I will have to notch the joist to get the shower waste though. there will only be about 200mm of pipe between the shower drain and the 110mm.