Looking good Ryan
1A. Requirement no, highly recommended yes.
4A. Some overlap on the right side is acceptable. Yes the TD should cover most (not all Velcro exposed), again not a requirement. TD length is 7 1/4"-7 1/2".
5A. Poppers are technically snaps but the designed differently than what you see most of around these parts. Poppers are not required, I only used them because it's screen accurate. What you use has no bearing on approvals.
Keep up the great work