The Aussie locker sounds great. Must have one...question: is it a LSD or full lock?
It is a locker.
also how do I strengthen the front IFS and increase travel of my rody without lifting?
The short answer is, you can't...not without mucho fab work anyway. The only way to increase IFS travel to any significant degree is to make longer control arms, like the desert racers use. Which involves modifying pretty much everything in the front end...steering, axles, suspension, EVERYTHING.
The nice thing about the locker is that it allows you traction even when your IFS doesn't keep both wheels on the ground...