Looking for large company for many Joomla, PHP, CSS, OsCommerce Websites

I am looking for an established web firm that has the capability of taking on up to 10 projects per week. Most projects are small scaled Joomla, OsCommerce, CSS, Xhtml type websites. Must be able to complete websites in a rapid fashion and be available via msn or aim messengers at a reasonable time in the USA. Also must be able to work on weekends. Must also have a good graphic designer for logo and banner creation Since I will be giving you a lot of projects you will have to sacrifice a bit of the cost On average I can get $250-$350 per project from my clients. Of course this depends on complexity etc. I have had companies try to work with me but couldn't keep up with the amount of projects. Are you up for the challenge? Id rather work with one established company than several companies at the same time. I want to build a strong long lasting relationship and do many years of business together Please respond with your background and experience levels with Zoomla, PHP, MySql, CSS etc.