Hi there! I have a lot of experience with installer softwares, both custom-made and using pre-built scripts. In fact, I just finished a similar software; see the latest project on my profile for more info on this (it's not marked as complete yet, but it is).
I can ensure the security and reliability of your installer setup. I can obscure information you don't want your customers seeing, create product keys that you distribute to customers, and more.
I'm very interested in hearing more about your project. I can have it done in 5 days at the most, but I have a bit of extra time lately so I will likely finish it sooner.
Thanks for your consideration!