Hi,
of your questions it seems to me that there are some basic problems on how to set up the environment. There are some points you should explore before proceeding with a project. I don't answer your questions, but I'll pass you some links where you can go deeper into the topic. Obviously it's just a piece of advice and I don't want to offend anyone.
VMware NSX-T Reference Design Guide:
VMware NSX-T Reference Design Guide | VMware
VMware NSX-T Data Center - Getting Started Hands-on Lab
VMware NSX-T Data Center - Getting Started Hands-on Lab
VMWARE NSX-T ® REFERENCE DESIGN GUIDE
ARomeo