Help me not burn money buying the wrong lens, please


Hey guys, I'm a complete newbie to this space, but have been working on a youtube business idea for a while. I'm about to start setting up a studio and have a very very low ceiling in the space. The room dimensions are: Height 1.93m. Width 2.08m. Length 3.7m.

I'll be recording on a sony zv-e10 ii and i'm trying to decide whether to get the sigma 16 1.4 or the sigma 23 1.4.

I've added an AI generated image of what I expect the studio space to look like.

**I don't want the room to look smaller than it already is** & I want a nice bokeh effect. **Also if anyone has any lighting tips I'd appreciate it**. I'm looking at probably picking up a godox es45 for a keylight and using a white sheet or bounce board for the fill (it's supposed to look moody, I don't want bright walls).

Appreciate your time, thank you for the help