welcome to it!
i've got the AC coil/shackle lift, and like it...but probably going to add/replace with the Calmini AAL in the rear soon

unfortunately wheels are a bit iffy right now on the 2nd gen Xterra, the brakes in front make it so that many styles of wheels don't fit (plus, you'll need at least 16" rather than 15" wheels).

there are a handful right now that work..Gunner MB, some procomp alloys, AC has a few on their website

you have 31s on right now (265/70R16)..an upgrade to stock OR size (265/75R16) or a 33" size (285/75R16 or 255/85R16) is fun, and doable before the lift.