Has anyone here bought a business right out of university? What advice or experiences can you share?

I got hooked on ETA books in my first year and have since worked in search funds and a roll-up while finishing electrical engineering. I can't see myself in a typical desk job after university. My plan is to acquire a business in Ontario with $250-700k SDE, paying 3-5x, operate it for 3-5 years with minimal growth as my base assumption, and then, once I gain sufficient confidence, hire a manager to take over daily operations. At that point, I hope to repeat the process and begin overseeing multiple companies. Worst-case scenario, I lose all of the money I have made through investing and my previous entrepreneurial ventures, but leave with more knowledge and hope that I would be more hirable for the jobs I would aim for anyway, out of university. I would love to hear what people think, I know I am jumping in the deep end and hoping I wont drown, but I have done it before professionally and educationaly and have consistently finished challeneges feeling more confident in myself.