***RUSH*** Wordpress Multi-Site Improvements

There are a couple of things to be done on my Wordpress multi-site, which consists of 3 sites basic sites: 1) Add a simple shopping page with a small number of products and PayPal capability to one of the sites 2) Repair NextGen Gallery issue where one of the sites is stuck in an upgrade loop (or replace NextGen with a similar plugin) 3) Fix a couple of minor CSS issues related to iPad and Safari display For this project, you MUST be an multi-site expert since #1 and #2 require managing plugins across multiple sites, which can be complicated. Thanks