After you complete you BA, you are planning to do economic hons.

Scope is undoubtedly good. Post graduate degree holders in economics can find jobs in equity research and other financial services in the corporate sector.
To have a career in economics, or to be an economist, one should have a relevant basic degree in Economics like the BA Economics. You can also choose to study a two year master like the MA/ MSc Economics and then enter work. Economist offers a plenty of roles and it also depends on what kind of economist you are. It varies like food economist, agricultural economist, tourism economist, educational/ academic economist, business economist, financial economist, state government, central, federal economist, law economist, environmental economist, united nations economist, building economist, natural resource economist, health and safety economist, international trade analyst, market analyst, business analyst, market/ business consultant.

The scope is vast. It depends upon your interest.
Good luck.