1. Yes, it is usually the junior base for initial assignment. It is definitely the junior base if you stay there and move up the list.
2. Yes, but LC is limited and often gets converted to SC which defeats the purpose. You take a guarantee reduction also.
3. Somebody else will have to answer that, but our health plan is scheduled to have lower monthly payments, but much higher deductibles and lower coverage. They also announced that they will eliminate the better health plan options. Unless that changes, you might want to plan on using your spouse's plan.

If you currently work at mesa, SKW will pay you more "soft money" in work rules and bonuses. Probably about 15-20% more credit than you are used to at mesa.