Interesting idea. With 29's you are looking at a 20% increase in size, so you may find the overall gearing a bit tall. Since its a unibody you will likely only gain a few inches with spring and strut spacers, unless you want to do a subframe lift and and fab work.
What offset wheels will you use? Taller tires equals wider in most cases, and there is not a lot of clearance on the back side of the tire. I'd suggest jacking the car up and seeing if the clearance is there since you already have the tires.
2010 LT 2.2 4 door