I have a few Apps of similar size. One is a Sports Management App, Rostering, development plans, statistics, team page, files, news, chat, fixtures, events, feedback forms, injury logs etc. And the others are logistics management apps again very individual and team orientated. It’s taken 6 months to develop these. Great learning curve.
Adalo is an incredible platform, but I do fear reliability, so only time will tell. I’m waiting on subscription payments before I release the apps I have been working on 
I also think when the component market place accepts developers components for sale, and possibly ability to purchase template apps, there’s huge potential for Adalo.
Will it be the Canva of the no code world?