Vertical Kegerator/Fermentor Combo

[junior627]

I am limited in space in my NYC condo so i was thinking about building a vertical kegerator/fermenter combo. The basic design of the kegerator would be as per https://www.homebrewtalk.com/entries/custom-danby-conversion.html Instead of the tower i would have a fan connected to 3" hole to blow cold air up into fermentation chamber until it reaches fermentation temperature.
Does anyone see issues with this design?
Should i have multiple 3" holes to push more air?

View attachment KEGERATOR-Model.pdf