Just like Jerry said, it will be fine. There are many ways to build them and this is just one of them. When talking with Mark Newhan before getting started on my truck he suggested the design like that is on his truck and allot of the vehicles that Craig builds. Delrin bushings instead of heims in the lower shock mounts keep the lower arms from twisting.
See both of theirs here: http://race-dezert.com/skunkz/newhan/index.html