To many repos??? No Public Key's!!

["Josh W." <joshw8104@gmail.com>]

So I posted about either having a faulty .iso and non-public keys. I've looked around in my /etc/apt/sources.list file. Maybe i have to many repos or just not the right ones... I have tried netselect on a bunch but not really getting any where. Here is the output of my sources.list file as of now. I commented out the Oracle VM repo, the "Also a Secondary" repo, and also the first repo under the cdrom repo... When i tried the netselect it gave me ip address's that didn't go anywhere. Not sure on what to do next... Can somebody point me in the right direction.
#

# deb cdrom:[Debian GNU/Linux 9.2.1 _Stretch_ - Official amd64 DVD Binary-1 20171013-13:09]/ stretch contrib main

#deb cdrom:[Debian GNU/Linux 9.2.1 _Stretch_ - Official amd64 DVD Binary-1 20171013-13:09]/ stretch contrib main

# deb http://deb.debian.org/debian/ stretch main non-free contrib
# deb-src http://deb.debian.org/debian/ stretch main non-free contrib

deb http://security.debian.org/debian-security stretch/updates main contrib non-free
deb-src http://security.debian.org/debian-security stretch/updates main contrib non-free

# stretch-updates, previously known as 'volatile'
deb http://deb.debian.org/debian/ stretch-updates main contrib non-free
deb-src http://deb.debian.org/debian/ stretch-updates main contrib non-free

# Primary mirror site for debian stretch
deb http://ftp.us.debian.org/debian/ stretch main contrib non-free
deb-src http://ftp.us.debian.org/debian stretch main contrib non-free

# Secondary mirror site for debian stretch
deb http://mirrors.linux.iu.edu/linux/debian/ stretch main contrib non-free
deb-src http://mirrors.linux.iu.edu/linux/debian/ stretch main contrib non-free

# This is a repo for Oracle VM
# deb http://download.virtualbox.org/virtualbox/debian stretch main contrib non-free
# deb-src http://download.virtualbox.org/virtualbox/debian stretch contrib

# Also a Secondary mirror site for debian stretch
# deb http://debian-archive.trafficmanager.net/debian stretch main contrib non-free
# deb-src http://debian-archive.trafficmanager.net/debian stretch main contrib non-free

Joshua <joshw8104@gmail.com>