Hi Kris.
1)I more recommend buy only EXP Autos Pro component in my site - 99Euros , and buy template Icetheme in official
IceTheme club site
(Start Plan at 59USD), it will be easier and cheaper for you.
Yes , you can next time buy template for my site + an extra 100Euros.
2)EXP Autos Pro component work with all templates for Joomla CMS and All Modules and each Page component support skins(templates) and CSS files and you can set for your template.
3)No, EXP Template have price - 49,99 Euro , but for Members EXP Autos Pro component have discount - 30% and Price = 34,99 Euro.