Building an interior wall with double recessed sliding doors

[yehor]

I have a space with dimensions 215x82x12, and here I would like to install two sliding doors and a wall.

If I build a wall with 45 frame, 12.5 plasterboard and leave a 1cm margin for the doors, the doors will only be 2.5cm.

To me, that feels a bit flimsy, or should I just go ahead? If I want thicker doors and a thinner wall, how do I build a thinner wall? There are some threads about building thin interior walls, but in my case, there is only something to screw into on one side, and that side is uneven brick.

Insulation is not of any interest, and I will build the doors myself.

I plan to finish next week, so I'm open to tips and ideas before I start.