I'm sure others will chime in, but the general concensus is to buy great fitting boots first, then worry about the skis.
Even though something seems like a great deal, I would never jump on it without having first ridden the skis (although admittedly, I did purchase a pair of skis this summer that I haven't ridden, but based on others who have ridden them and who have liked skis that I currently own, I grabbed 'em blindly).
The thing about deals is that they always come around again.
So, hopefully it will be a good deal in that you will like the ski. Cuz if you end up not liking the ski, then you'll have to unload them at a loss and it will end up not being that much of a good deal.
Hope I didn't harsh your mellow too much, which wasn't my intention.
When I was in the market for new gear, I first rummaged through the buyer's guides (SKI, Skiing, Powder, Realskiers), then stumbled upon Epic and TGR, then began demoing. Then I stopped, re-evaluated, and started again by getting a set of new boots. That changed the demoing all over as I'd been skiing sloppy hand-me-down boots just to squeak through the season on the cheap.
Anyway, I probably would have held off on the "good deal" and used the money toward some proper fitted boots.
But that's just me.
Hope you end up enjoying the planks, which would then be the sweetest deal of all!
Also, in the grand scheme of things, I've generally found that if you have to ask the question "Did I make the right choice," chances are you probably didn't.