There’s been some talk about Brother imitating HP lately. Last thing I heard is that they’ve been attributing it to a ‘faulty’ firmware upgrade and offering a ‘fix’. Personally I’m not yet sure what to think of it - it’s one thing I’ll be keeping an eye on though. My current HP printer will still happily work with third-party toner but is slowly approaching the end of its lifespan.

Generally speaking, for the average user who doesn’t need special hardware to produce ultra-quality borderless photo posters on a regular basis:

• If you only print a few pages each month, the cleaning cycle of an inkjet will waste an insane amount of ink to the point where a laser printer is cheaper.
• If you print a lot, the cost per page will be lower on a laser printer, so you should buy a laser printer.

Moderately talented DIYer here - with what you describe, I can’t help but wonder if it wouldn’t be easier and cheaper to build this thing Lego-style from relatively cheap pre-made floor cupboards plus a series of custom-cut big boards as a countertop, and then stack some shelves on top.
In Ikea-land this could be e.g. Metod or Knoxhult ‘Unterschrank’ and Kallax or Billy shelves - I’m sure most furniture shops have something similar with a different name. Then all you’d have to do is arrange them nicely, connect them with some screws and attach them to the brick wall at some neuralgic points.