Coil springs required?

[Seefral]

Hi. I have a 2000 Limited with original(?) suspension and 200K miles. I drive a lot on washboard roads and it's gotten to be a brutal ride. It sits level. The stock ride height is fine. I haven't felt it bottom out. None of the coils are broken.
I'm planning on replacing all 4 corners with bilstien 4600s. Replacement coil springs are pretty expensive and I also need to the the timing belt change soon. Given the truck sits okay and doesn't bottom out do I need to invest in new springs?
I only drive the truck ~8K miles per year but I don't plan on selling it any time soon.

 

[fourwd1]

If you have 200K miles on a "original ?" suspension, it's no wonder the ride is brutal.
Even if the original suspension was replaced at maybe 100K you'd likely still need a new one at 200K. You could try just the Bilstein's and see how they do and go from there. Especially if you're doing the work yourself. But if you're paying for the work it would be much cheaper in labor $$ to do it all at once instead of in 2 steps.