Install And Alignment Of A Upr K Member In A 00' Roush

I am looking to use a upr k-member in my roush for my new turbo build. I have questions about spring rate, bump steer, and alignment.

What spring rate do I want if Im looking for the same handling as the roush springs gave me?

Do I need a bump steer kit?

Where can I get this aligned after its all together? Do I need to go to a performance suspension specialist?

Please advise!