As I said before, the answer is pick between LGA, PHL, DCA, CLT which place you like the most, or your wife likes the most. The other **** will ebb and flow. Want wide body? Drop DCA. Want a non stop to Europe…also drop DCA. Want training center job options? CLT. Seriously, the things you are looking at are not static, they change over time in each base. Take the long view.
Based on your east coast desire, I’m recommending PHL, and live in City Center or 20 miles north of Doylestown, then you get to live in a gorgeous area and have an easy PHL commute, or somewhat more onerous but still doable LGA/JFK.
congrats!! Welcome aboard!