I've had the H&R Race springs (red) for a couple years now and the stance has been perfect on all four corners (no sagging at all). The Race springs should only lower about 1" to maybe 1.25", but to me it is not as low as the Pro-Kit or most other popular springs.
Do you have spring isolators? If not, putting them on could add a 1/4 inch or so.
I love the race springs and I'm able to successfully go over almost all speed bumps. Unfortunately, there's always some stupid place with either a speed bump way too tall (even for normal cars) OR with an entrance/exit that's crazy steep. 99% of the time, I have no issues at all even with an X pipe. If I had frequent issues, I would probably find another spring that is slightly taller or possibly go with adjustable rear lower control arms.
I'm curious what you decide on and then how it works out for you afterwards.