I have designed one for 500 dashboard users and various other requirements. My advise would be to get a cheap SQL compliant database that does not require a lot

I have designed one for 500 dashboard users and various other requirements. My advise would be to get a cheap SQL compliant database that does not require a lot of maintenance (if you can afford buy a cloud one). Then for the analysis part the quickest thing to do is use Jupyter + SQLAlchemy. You can also use a dashboarding tool, there are many, to connect to the database, but I think with Jupyter you can ask more interesting questions that require more blending or transformations. That's it, you'll grow from here in the coming months and years, but if you over engineer analytics at the beginning you'll most likely get tired of it and stop doing it at some point.