I don't know Canadian pricing, but 5DII body-only is currently $2100 US at the more reliable US sellers... so with 24-105 that would be one heck of a deal. I'm always suspicious of screamingly good deals! Why are they able to offer it so cheap? Is it a gray market camera and lens that won't be covered under warranty by Canon Canada? I'd do some checks.
As to going from 7D to 5DII.... well I use both and IMO you have to make big prints... really big prints, say 24x36"... before you really see very noticeable benefits of FF in your images. The FF camera captures a little more fine detail, gives slightly more control over depth of field, offers just a little more dynamic range and makes for slightly smoother gradations. The FF camera gives you a bit more control over depth of field and, IMO, is usable about one stop higher ISO (shooting RAW and processing through Lightroom and Photoshop, I'll use my 7Ds to 3200 without much concern, 5DII to 6400).
On the other hand, you'll be giving up relatively recent, fast, high performance auto focus in the 7D for what is essentally an AF system on par with 20D/30D or many of the Rebel/xxxD series. The 5DII viewfinder is slightly larger, but not necessarily any brighter. It's 98% coverage, compared to 100% on 7D. The crop camera can be used with any lens Canon makes, not to mention all the third party lenses made to fit Canon. The full frame camera is limited to full frame lenses, which in many cases are larger, heavier and more expensive than equivalents designed for crop (compare your 10-22 with a 16-35, or compare a 300/4 IS with a 500/4 IS).
Everyone is really gaga about full frame, but it might not be the best choice for everyone. Using them alongside each other for nearly three years now, I find I shoot about 10X as many images with my two 7Ds, as I do with my 5DII. But I shoot a lot of sports/action, where the 7Ds are a much superior choice.
When I'm shooting landscapes where big prints are a possibility, or portraits where fine gradations and a lot of control over depth of field are desirable, or macros where I want to use small apertures without as much concern about diffraction, I'll get out the 5DII for stationary or slow moving subjects. When I'm shooting faster action, I depend upon my 7Ds. My 5DII is usually set to One Shot, while my 7Ds are in AI Servo focus mode most of the time. This is not to say that one can't be used in place of the other, just using each model for the purposes where they most excel. Someone who only shoots more stationary subjects, rarely needs to stop action, might be perfectly delighted with 5DII. Someone who shoots only sports/action might find it frustrating and be better off with 7D.
Both models are great cameras. Of the two, I'd rank the 7D as more versatile overall for experienced shooters... and the 5DII as less versatile, but simpler and easier for less experienced shooters.
Now these may or may not be reasons for you to make the swap.. or not. 5DII might be the more perfect camera for you... Or the 7D you already have might be better. Just some considerations that might help to clarify your choices.