I have read your project description, i understand what you want, and i would like to offer you my services. I have migrated many various Joomla websites without any issues, and i have years of experience with all required technologies (Joomla, Joomla administration and development, PHP&MySQL, HTML&CSS, JS), so i can finish this project quickly, without errors and to your full satisfaction. In case you would like to discuss the project with me or get started, feel free to contact me by private message. I'm looking forward to our cooperation. PS: I will need logins for both hostings to get this project done.