WIX to Advanced Installer

We have a WIX installer for our product however we would like to use Advance Installer instead and convert FROM WIX TO ADVANCE INSTALLER (we have purchased an architect licence) to now do the install. The auto convert is not good enough and this is more about themes. We need to make sure the installer is themed to our brand guidelines. We will provide a technically functional installer in WIX however it will need converting and require you to work on the UI to colour, theme and have the dialogs exactly to our requirements. We want to minimise the dialogs and provide some tick box options on the main single (hopefully a single screen). It should successfully uninstall everything it added during install and support modifications after to add missing components. We want to use the surface theme but coloured to our brand. There should also be a licence screen to enter a licence key (which is just a string) but it would be good to validate the licence key with our cloud service if possible but this can be treated as a second phase to the project. It is a requirement to also support a silent command line installation with the options, licence key passed in with command line parameters.