What techinspecter has said is very very true, But on an equal note you are looking for a cruiser. Even though what he has said is crucial you are not starting with a race car or even a daily driver car in the end. I know you will have to work with what room has been given to you. What he said would be great to start with if you didnt have anything started and wanted to design a great handeling car from the start. Take your bar lengths you have start with some mounting (where you think they can go) and move the rearend assy to see what happens, with your pinion angle, and shock movments. After all said and you think is done. I dont know what fabrication or design skills you might have but I think you might have a rough time with what He has given you to do. Now I hope you best of luck. There is alot of great information here. You will be the guy that will have to decifer all the info. Oh and a triangulated 4 link isnt a bad setup. Just watch your upper bar angles not enough and there rear will move side to side.

best of luck.