While you haven't mentioned the miles on the existing suspension you are talking about replacement of components. That alone will give you greater 'feel' of what the X is doing and reduce the lean.
If you like the ride, stock strut replacements will be fine.
Camber plates will allow for more negative camber, will improve handling and reduce lean. Negative is too much negative camber will cause greater tire wear on the inside of the tire.
Spacers will deliver a wider wheel base, again improving handling and less lean.
Just as the sway bar ties both sides of the lower suspension together, the strut tower brace ties the top of the suspension together--less lean and better handling.
You can rent a spring compressor from most auto parts stores such as Autozon
Source for Eibach sway bars:
Eibach Sway Bar, Eibach Anti Roll Kit, Eibach Anti Sway Bars
Eibach sway bar are much thicker which ties both side tighter, improves handling and decreases lean more than any other modification.
If the front suspension needs to be rebuilt the rear suspension is likely due. The rear sway bar will help your objective but will be compromised if the other suspension components are not addressed. If you plan to do the work in stages you are spot on doing the front first. A stock X has some oversteer which increases as the front suspension wears.