My suggestion is, find a University where few Nepalses are there. bring money for at least 2 semester, in I -20 living expenses are too high, you wouldn't be paying that much to live. Anyway,  study 1 semester there, mean while apply  for  a job on campus, which is just 20 hours, work whatever they offer, do't be picky. once u get a job,  they gonna apply Social security for you, once you get that, look for different cheaper universties. within 1 semester (3-4) you will be able to find your way. good luck.