BestGadgetry.com Maintenance

Hi, I need a talented developer/designer to maintain my store www.bestgadgetry.com. I just need someone to work along with me to ensure everything is working fine at all times, deal with any changes I want to make and to design the site according to the season Christmas/V-day/New Year's, etc. Ideally the person must know Magento, as this is a new system and can be a bit tricky. My current freelancer is very cheap and talented, but he's too slow. Running a business means quick changes to adapt to the current market, with him, it takes a week to complete a task. This is a long term thing to continuously work with my store as it grows. It's not an everyday thing; maybe 3 days a week I might need to deal with a problem popping up. Be reasonable with your pricing when you contact me and I need you to be able to work on the store immediately. Thanks for looking.