When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Upgrading your sway bars will be a night and day difference. Hands down the best mod I have done that provided instant feedback. I can't really think of any cons except that you should regularly lube the sway bar brackets.....maybe twice a year, at least once though. Make sure you properly torque the brackets and endlinks to spec. Some had issues with OEM endlinks on aftermarket sway bars so you may or may not need to change those out too.
I have been running my Hotchkiss for a few years and love them.....I have the Sportcross and set my both to stiff. I think most sedan owners have soft up front and stiff on the rear.....
Any adjustment or changes made to your suspension will always require an alignment so yes you should get one shortly after. The front strut bar is 99% looks. lol Adding a rear strut bar will tighten the handling....I have the tanabe and felt the rear more planted on turns. You should also look into rigid bars and a rear lower brace. I heard rigid bars prevent wheel hopping but I felt like my rear strut helped that as well.
If you also plan on dropping your car you should look into some of the FIGs products as far as rear control arms, endlink adjusters and front sway relocation brackets.