Yes, I'm still thinking long travel on the rear axle, but the new MT 4 link hybrid is probably the way I'll go. It's fairly new and I've only seen one picture of it in action. What I like about it are the reduction in cost compared to their 3-link (which still isn't available as a kit) and it doesn't require as much modification to the axle housing or frame rails.
Basically the rear lower link position is moved from under the axle (where it binds) to the front of the axle.
from LT on FB: This works with your existing OEM 4 link. Since most aftermarket lower links bind on the axle tube at full droop we have also come out with our new rear lower links with the axle bushing offset so the link tube clears the axle at full droop with no bind. They also feature Currie Johnny Joints and 100% custom CNC machined DOM tubeing and come with new Grade 8 bolts w/nylocks for mounting and fully powder coated black. The links ala-cart are not on the site yet but are in stock and available for $325 a set.
https://sphotos-b.xx.fbcdn.net/hphotos-ash3/526588_10151016035925894_1102672016_n.jpg