From Toronto I would say you have a few choices, considering you don't want to drive to far.
Vermont is a great state I love it there, the largest city is Burlington and you find cheap lodging over there and you are short drive of a few good ski resorts. If not you can stay directly at the resort and pay a little more.
I do agree for beginners Jay is out of the question, thats my favorite place and the closet to Toronto to.
Smugglers Notch, great resort with plenty of beginners runs for your buddies. It's a laid back resort, with affordable prices and fun warranted. They get plenty of snow too.
Stowe a little more expensive and you get a little of the sold out resort feeling, with faster lifts and even a gondola, they are also on the more expensive range. I forgot is the tallest peak in Vermont.
Sugar Bush, great resort little expensive, amazing terrain spread out in 2 slopes a lot of terrain for beginners and intermediates alike. Also your longest drive from Toronto.
Bolton valley I near Stowe but I have not been there so I can't give you any info.
You can get more info in this page Vacation Information on Vermont Ski and Snowboard Areas and Mountain Resorts
Just my one tip, April 16 is a late season specially for the east coast so call each resort ahead and see how much terrain is open and their expected closing days. I am sure that a few of the ski resorts close in may but not sure in what conditions.