That's really a tough question to answer.
Where do you see yourself in 6 months, a year, and 5 years?
Evaluate the industry RIGHT NOW. Realize that ATP's 90 day programs are pretty much a waste of time considering not too many people are hiring 190-250 hour wonder kids.
A place like Falcon, or Falcon themselves, will provide you a much more stable environment to grow as a professional (CFI'ing), than ATP will - since it appears the general mindset there at ATP is to get in, get out, where as at Falcon it's improve and perfect your instructing abilities and provide our customers with a great product (just like what you will have receieved as a student).