I can't speak for the third school, but GT and Smeal are really small programs and pretty competitive. Your GMAT is below aaverage for both as well. Each school only admits around 65-80 students per year and they get a ton of applications from India including many from engineering (where the GMATs are usually over 700). You might consider broadening your search a bit more to some state schools which have larger programs, or even maybe doing a part time MBA which would allow you to work at the same time. Typically those programs are easier to get into.