Large Scale Application (SaaS) Using Firebase and Angular 2?

Planning to build an inventory and total billing system. each user will have separate data set.

Previously i was planning to build this via Laravel + MySql + VueJS. Then i have gone into researching about the pros / cons and other technologies.

I have got to know about Angular 2 (Started Learning) and Firebase (Just Today) it seems promising.

We Already have a C# Standalone App which is very complex in data and in functions (about 80 tables). we are planning to build this as Same.

Angular and Fire will save alot of time at last its all gonna be a json object. I am afraid we were doing tables/columns/fields all these years suddenly we are moving to something we can access so easily.

This is My First Full Web Application. Please Advise Me If this is a good Choice