I need ongoing support with Joomla / HIkamarket

General information for the website: A platform for the dance industry / genre - also, a marketplace for dance wholesalers and retailers to sell to an exclusively dance audience Kind of development: Customization of existing website Description of requirements/features: I will need support with ongoing development of Joomla platform, as I think of new features, improvements. Hikamarket has been installed and we have a basic set up, but I need help in taking this to the next level of its development and to make it robust for a much higher number of users. Someone with an ecommerce understanding would be really helpful. Extra notes: