Inputs required to finalise product architecture

Hello All, I am not from software development background. I am working on a start up idea, which will be a web and mobile based ERP application. To start with I have been given the following inputs for the Design architecture.

  1. SAAS With Multi Tenant model architecture. (# challenging but futuristic)
  2. DB type - Relational data model.
  3. OS ? Ex Linux,Unix,MAC n window
  4. Database? Ex oracle, MySQL n MSSQL
  5. UI ? Ex react js, Angular js,
  6. Code ? Ex java ,
  7. Web server ? Ex tomcat, IIS
  8. Server load balancing application ? Ex Apache, IIS manager.
    Will be glad if someone can provide me a feedback if this right wrong or should go with something else.
    Thank you