Hello Simon, i have read your project description, i understand what you want, and i would like to offer you my services. I can create custom Magento theme for you, that will have all required features. I have excellent knowledge of Magento and related technologies, most importantly including experience with creating complex Magento themes and websites, so i can finish this project quickly, without errors, and to your full satisfaction. Feel free to contact me by private message if you want to discuss the details (I would certainly like to here some more details about this project before eventually moving forward.). I'm looking forward to our cooperation. Regards, Josef