Oh good luck! I hope it all goes well :-)
This was our timeline:
Country applying from: USA
Type of visa applied for: Spouse/Settlement (Priority)
Online Application Submitted: March 21, 2016
Biometrics Taken: March 31, 2016
Application Mailed: March 31, 2016
Package Received in Sheffield: April 05, 2016
Email confirming application being prepared for consideration: April 06, 2016
Date Sheffield emailed to confirm decision has been made: April 11, 2016
Visa Arrived: April 14, 2016