Finally got it to work, so if anyone has this issue in the future, here is my solution.
First, use the default theme. I was using office black and it would pop up with a white screen when I landed on the google sign in page leaving me no way to sign in..
Next, go to your Thunderbird Profile in windows explorer. Type in %APPDATA% in windows search and go down to Thunderbird > Profiles.
Delete or rename the calendar-data folder to .OLD
Restart Thunderbird, open up Lightning and then add your google calendars.