have you considered using https://github.com/hashicorp/terraform-exec to run terraform inside you go process to manage the entire AWS connection piece. Terraform being largely rock solid and frequently updated on this.
Thanks a lot for your advice, I work every day with Terraform and I understand what you mean, but that is out of the scope at least right now, I want to keep this tool as simple as possible, but definitely this worth an analysis
could make this considerably more robust.