Should I get an iPad 4, Laptop, or iPhone 5?

So here's the situation.

I'm a teen and I have a job, I will have $934 by the time my Christmas Break is over.

At home, I share a laptop with my family and it is kind of slow and outdated for the video editing that I need to do. The laptop is from 2009 and is too slow for video editing that I do. I edit 1080p HD so I kind of need another computer. I haven't made any videos for a few months now, but I plan to in the spring.

I use to have an iPod Touch, 2nd Generation, but I sold that for some money for saving, and that was a little slow for me, plus most apps required IOS 4.3. And it only went to 4.2.1. For school, taking a laptop would be to heavy, but we're allowed to use technology for in-class essays, and I type faster than writing so I'm not sure if I should get one. I also find it annoying taking a laptop with me when going places and taking an iPad would be less weight. That way I can experience IOS and do work with less weight. In computers class, I need an IOS Device, and an iPod will not be acceptable, so I either need an iPhone or iPad. I already have a cell phone, an android, which is four months old, and I find it okay, so I'm not sure if I should get an iPhone. However, I would like to get one because it will fit in my pocket, and kind of because everyone has one… Lol

The laptop I would get costs $974 and iPod would not be okay, and I never want one again. An iPad comes to $563 with tax in my region. An iPhone would cost me $784 with taxes. I'm not sure if I should get an iPad or Laptop first. I could use an iPad, so that I can use it for school and for the portability, but a laptop would help me for video editting, and school work at home. If you are not sure, please list your answer in what you believe is priority. My laptop at home is shared, slow, and not sufficient for video editting.

Laptop. Simply much more you can do.

Well I think the ipad would be the best because you can just by a keyboard and connect it to your ipad and it will have the pretty much the same features of a laptop. The ipad can do everything an iphone can do but it just can call.