Thats the exact setup I have, hp 30 up front with an aussie and a 29 spline 8.25 rear with a no slip.... great combo for on road and wheeling. The rear is dead silent unlike other lunchbox lockers and the front is also silent. In 4wd is where they shine tho, its been point and shoot with my gears lockers and 33s. Once these 33s wear out I might step up to 35s but for now my xj has gone anywhere i want it to, I think you will like the setup.
If your about to gear, go deep. Don't bother with 4.10s or anything, if you have 33s with a possibility of 35s in the future go 4.88s you won't regret it. With 33s I got gobs of power and great mpg for a lifted xj.