Rewrite a working website in CI: Bondifre, PyroCMS, Fuel CMS or what?

[eluser]Unknown[/eluser]
Hello everybody, I need your help.

I have a nice working website in PHP / MYSQL and I need to add more features. It's based on an old proprietary CMS (with only one huge file for functions) and I want to rewrite it.

By the way I need to keep my url structure and my actual database, I can change the structure but I need to keep data.

Which is the best way to proceed?

Basically I need a simple CMS that can help me to draw the website structure and can handle the authentication login (i need also facebook and twitter login).

Better to start from scratch or can I use Bonfire, PyroCMS, FuelCMS or Ionize?

Thank you.

[eluser]Lechuss[/eluser]
Hi,

If You dont need to redesigne webpage, just cms /add,edit,delete article/ IMHO just download CI and install ion_auth or use Bonfire /has auth for users and admin backend/

Take a look at:

https://github.com/linuxjuggler/CI_Starter
or
(looks better)
https://github.com/jiji262/phpLauncher