I used the outervision calculator and a few assumptions on the ram and drive. It states your on load max is 131W. Recommends just over 180W
https://outervision.com/power-supply-calculator
I am fairly sure that InWin makes a newer version similar to the Chopin with a larger 200-something W PSU. I wish I could recall the model number...but was recommended in an updated "cheap office PC" build on YouTube by the same guy that did the cheap Chopin build.
I would suggest that if you like the case enough to try it, it will likely be fine for office task and such. Worse comes to worse you can always find a replacement or go with the power brick adapter (external) for something better.