optimizing ExtJS + YII app

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
I have a small YII driven app that is using EXTJS 4.1 as GUI. It has some grids. The job here is to optimize the complete environment with apache-php-mysql and the app itselfes. There are a lot of small Issues that will decrease the speed of this site.
It needs to find best options to run the app with more speed. Test Environment is online - if you are interested I can give you access do first tests.

Here a list what Pagespeed has found for optimizing:

Reduce blocking resources (2)
Inline Small JavaScript
Inline Small CSS
Minimize payload (6)
Enable compression
Minify JavaScript
Serve resources from a consistent URL
Combine images into CSS sprites
Optimize images
Minify CSS
Minimize delay in page load (1)
Avoid CSS @import
Other (2)
Leverage browser caching
Defer parsing of JavaScript

Skills required:
Javascript, MySQL, PHP
About the employer:
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