Cat litter box enclosure from tool chest plans, but bigger?

Question1: I'm wondering if anyone has done something like this before. What was your experience, and what problems did you run into?

Question 2: Ideally, I'd like the front to open for easy cleaning, and the top to open for ventilation. Is this possible? If not, what would be the reason?

Question 3: Is this advanced level kung-fu that I'm attempting here?

Thank you for your answers!