Compatibility

Hello,
I'm going to build a hotel reservation system for Baku city hotels (Azerbaijan). I read all plan features and found this extension interesting. I have several questions regarding plans and features:
1) Is solidres extensions supported by Joomla 3.6.5 version? I use this latest version.
2) If I buy single plan, will I be able to add booking search system and other features of this plan to my existing template?
3) If I need to upgrade, as I understand, I do not need to rebuild everything from start, just additional features will be added, yes?