I wish you all the best. However, knowing AS management I'd be willing to bet the Virgin brand is gone sooner than later. Remember, they fought a protracted legal fight to strangle your airline in its crib.
Alaska has more 737s on order than A320s that Virgin flies. As your leases come due, I'd expect AS to return the aircraft. This is why it is CRITICAL for Virgin pilots to expedite a merged seniority list. Unless the SLI is completed before the lease returns kick in, it will be Virgin pilots who get furloughed while AS pilots/AS new hires fill the slots on the new 737s.
If the SLI is completed, then no one will get furloughed and Virgin pilots will have the opportunity to bid into Alaska equipment as their seniority allows. Make sure your MEC insists on "No Bump/No Flush" language in the SLI. That will protect the both the VX and AS Captains who already hold the left seat.
Hopefully this SLI will be fairly smooth as long as one group doesn't have unrealistic expectations as the USAIR boys did when America West acquired them.