You will need to set backlash. You'll need a dial indicator with a mount. This is simple if you're reusing the same gears - you won't have to mess with pinion depth, etc. Just get another carrier and mount you ring gear to it, set the backlash using shims and you're good to go. Chances are, if you reuse your existing carrier bearings, you won't need to modify the shim packs. BTW, the backlash for an 8.8 is .008" to .014"
Here's a link I had bookmarked that explains everything (w/ pics) very well:
Hopefully this helps. I've done this a bunch of times and it really isn't that difficult - I'm sure you could handle it.