Princeton just redid financial aid and it is now probably the most affordable college for UMC (donut hole) families.
Because of this (and being from NJ, slight boost for NJ students, just an impression so not verified), I would lean toward SCEA Princeton. Last cycle, Stanford/Princeton gave best aid out of the schools my son was accepted to (compared to Duke, Brown Wash U, Vanderbilt, did not apply MIT, did not get into Yale Harvard). This year Princeton aid will go up, but alas so will competition. Best of luck.