Just a quick update and a thank you to all that have contributed to this thread. I also wanted to thank all of you that took the time to PM me regarding your experiences with DAS, they were spot on.
I got a call back the next morning from Sean at DAS in Solana Beach and he walked my through the process step-by-step. Excellent customer service. We concluded our business the next morning as he ordered the Gen4 G17 for SSE. By Tues/Wed he'll have the serial number and I can go to his shop and start the DROS process. In addition to the professionalism exhibited by the guys at DAS, their prices are extremely competitive for San Diego County. I will be doing business with DAS for roster and non-roster SSE from now on.