Convert a project into codeigniter framework -- 3

Its a straightforward interface with 3 user levels(Super admin, Admin, Agent).
Only agent can add these:
1. applicants
2. applications(by applicant)
No complicated calculations required.

Super admin
-Add/delete/edit other users(admin or agent)
-Change language of the interface

Admin
- Add agents
- Check daily total in and out and balance. Export to csv on screen

Agents
-Add daily debit/credit amount. Export to csv on screen
-Add applicant
-Add applications(each application must link to a applicant)

Can propose to use other framework, as long as its easy to add more features later on