I would not come here for ACY alone. Anything other than FLL is a gamble right now.
But one more thing to look at is the outlook for your current job. What is the future of 50 seat flying with oil they way it has been. Can you take that seat you are in as granted? The regional jet is a thing of the past. Will your company be able to transform into something else like RAH is trying? I am sure all this is on your mind.
On the other hand the ULCC model that Spirit pursues is also only working up to a certain oil price. $25 move in the wrong direction and the market segment Spirit is serving shuts down. People often mention JB and other LCCs as our competition when in reality our pax are the Walmart folks. A high % of our pax are poor and they are not on a trip to Medellin for vacation. They don't choose Spirit over JB. They had no choice. They don't go to Walmart because they want to save money, but because they have no money to save. This is why the model is good and the place has potential. It is tapping into a market that has the highest population of all. It serves the lowest income classes. But for the same reason Spirit can't raise prices so the game is over above $115 per barrel if sustained for a long period.
Coming to Spirit is a gamble for many reasons. The pay off could be a quick (4-5y) left seat in a growing company. May be even the next best thing. The other side has acquisition, merger, integration, staple, and furlough written all over it.
The pay is actually not bad. The scale on apc does not show the stepping but your 2nd year would be $66 if you get hired now. QOL is outstanding especially in ACY. Highest days off and if you are close there is always extra flying for you. The only thing is ACY is always in limbo and it is already senior. I am not even sure you could hold it out of class anymore.
Good luck with your choice.