Did you ever finalize this? I'm in the exact same boat. 2009 SXT 2.0. 97,000 miles. Definitely have one blown front strut, possibly 2. I have some KYB's ordered and on the way and am thinking about going ahead with some lowering springs since I'll have it all apart. But am trying to figure out the rest of the required parts. I've never replaced struts before, except as an entire assembly.
Rockin' the bone stock Surf Blue 2009 Caliber SXT
Not so new anymore with 115k miles and lots of little problems popping up. Yay!