Yes. Even configuring the 72 APs individually will be a nightmare, let alone monitoring and maintaining them.
Look at the ZD1200 (up to 75 APs) or ZD3000 (up to 500 APs) or the SZ-100 (up to 1000 APs). For 72 APs the total cost would be similar between these three units so it really depends how scalable you want it to be.
That is true that you need a controller and it is a nightmare if you need to configure 72 APs individually. I was trying to configure it on my own and it was like a hell. Luckily, I received help from Custom writing center. They are great!