Actually, $900 is a bit high for the area, unless you live alone. Most places with multiple bedrooms range in the $500-$700 range, plus utils. Popular towns to look in include Glen Cove, Sea Cliff, Roslyn, Great Neck, Oyster Bay, Mineola, Greenvale, and Westbury. Try newsday.com or the NYCOM webboard. If you call student affairs they should be able to give you a password. I've noticed a bunch of first years-to- be on there already.
Dont buy any books until you get here. The dissection kit they tell you to buy is not needed. The anatomy lab has plenty of equipment, at least they did last year. Shop around for a microscope. Olympus will rent you one for around $600 through the school, but I bought a new, generic one online for $400. Works fine.
Enjoy yourselves between now and the start of school. Life certainly changes once you start.