Hi, minimalist, welcome here! That is a lot of questions! This is why I think it is appropriate to quote the docs:
The minimal templates are intended only for advanced users. Most things will not work out-of-the-box, and you will have to fix them yourself. If you are not prepared to do a lot of reading, searching, learning, and troubleshooting, then you should instead stick to the standard templates, which are perfectly suitable for the vast majority of users. In particular, if you are new to Qubes, you should not attempt to use minimal templates until you have gained more experience.
Please consider using a standard template and feel free to ask the remaining questions 
You will find some answers here: