Let me chime in and say that your quality of life will dramatically improve if you can choose an airport that is
not LAX. There's a reason why John Wayne Airport is more expensive; it's a premium upscale airport experience serving one of the most affluent counties in America, and Orange Countians can and do pay extra for that privilege of using John Wayne.
But
Long Beach Airport (airport code LGB) is fabulous, and a major JetBlue hub. It's a small airport in Los Angeles County, but very stylish and reasonably convenient to Disneyland and Orange County. It's not going to have the curbside valet parking, first class airline lounges, spa facilities, etc. that John Wayne does. But as you've discovered, there are daily non-stops from Boston and New York to Long Beach on JetBlue.
LGB is an indoor/outdoor airport with a funky mix of hip outdoor lounges and old-fashioned boarding stairs to the planes, so coming from the East Coast you'll instantly realize you are in some exotic place called "SoCal". (I lived in Mass for several years, so be prepared for a bit of New England vs. SoCal culture shock)