Many of those working for regional today deserve to be happy. Buy a bottle of champers at the off licence and drink it with your family - it is well earned.
However please think carefully about SAH's business plan. Even if the CAA signs off on the deal doesn't mean you are made for life. Airlines can and do go bust or make staff redundant. The deep pockets of parent Lufty are no more.
Granite needs to restructure quickly and will not find it easy against Eastern and Flybe. What worked in the 90s doesn't necessarily work now.
Use your own judgment and be prepared to act based on your gut instincts.