After almost 11 months of work. Starting from square zero with never building a Drupal or using Drupal to a full site migrated off of a horrible CMS platform, my site went live last night at 2030EST!
We migrated 150,000+ users (with up to 10 security roles each), 1300+ blog posts, and 40,000+ comments!
The site is Drupal 7 and incorporates a slew of modules to include Drupal Commerce.
The site is running on AWS with a load balancer up front, three web server nodes behind that, MongoDB cache off to the side, Gluster File system for /sites/all, and Amazon's RDS MySQL service as the database.
Learned a lot, discovered a lot! Now to push forward and develop more capability using Drupal!