please help me choose a framework :)

[eluser]Eric Barnes[/eluser]
CodeIgniter should work great for what you describe. CodeIgniter itself has this goal which I am sure every body agrees is accurate:

Provide power and speed through simple and elegant tools with a low barrier of entry, a very small footprint, and comprehensive documentation.

Really the only way to find out if it or any other framework suits you is download and do some playing. Every framework is setup differently and all do things differently. So really only you can make the judgement on which one is best for you.