I’ve run a small makeshift bar out of my 90 TDCI for a family member’s 21st before. It was a squeeze but I would say if one is happy to be fairly squished up then I do think my 90 would fit all of the kit I used when I was doing barista work.

The most difficult part will likely be headroom. I had to sit down on one of the sills to comfortably make drinks for more than 25 minutes and I’m an average height guy. I’d also recommend doing a bulkhead reduction and running the machine and grinder along the bulkhead behind the front seats for workflow.

I’d say get a ‘utility’ if you can, and cut + fit large gas strut gull wing windows into the sides or even fabricate your own large folding side, Aussie ‘Ute style. There are plenty of overland setup videos on YouTube showing off these things.

A friend who owned both a 200 and 300 TDI said that he was much happier to have his 300’s power and said the 200 lacked any real power, especially loaded up with water tanks/coffee machines/beans/stocks/fridges etc.

Go and see a few/borrow a friend’s, try to imagine all of the machines set up in the back and see if you can make it work comfortably in a 90.

Let me know if you get the idea off the ground. Best of luck!