Icon Suspension Front, what in the rear?

[abnmike]

I scored a set of the Icon shocks, etc for my 2017 Expedition - used, exc condition. It offers a .75 to 2.25 lift in the front.

Now curious what I should do in the rear? Bilstein 5100s? Should I add a spacer?

 

[abnmike]

and for reference I'm at 160k miles, original shocks and springs all around - so I do want to replace rears but not going to spend ICON money for new rears.