You can find the silent install commands here,
https://ninite.com/help/features/silent.html
You cannot run the ninite in a dos-box on a pre-installed machine that did not finish it installation of the user profile. Plus, your NIC and internet will only be connected to be used by the user once the profile is created. To do a software install from a non profile machine you need peer networking with proxy setup....which is a whole new ball game. You can install the software and then you'll need a proxy to download the programs.
Why do you think we create all these nice little tools, reg files, batch files, etc? For one, we don't know a lot of stuff either, but we are willing to try and find out.....google knows a lot. We like to automate our windows so we don't have to click, second we like tinkering with it. We create batch files, exe files to do what you want to do.....we study, we learn....but we do it manually....simply because the root to automate through peer network is not easy. Windows have a default profile for a reason, to peer, but in dos with streaming.
So what I am saying is, you need to brush up on your dos, batch and while you are at it grab some power-shell script with it.....you'll need it.
Microsoft have a streaming service that they stream a default install to specification of the customer, what it cost I do not know. When you buy a new computer the default profile, administrator profile, is setup to peer network, then the profile gets locked out by the supplier and they peer the software through that profile.
Bottom line. I'll gave you guidance.....I'm not going to build it for you. I work for a Sheikh here in the Emirates that pays me well for what I build for him and the Company.
But I'm just saying......no offense intended