Weight and how it hangs off your bow is something that is different for everybody. I like a long front bar and one long side bar. I have more than twice the weight on the back bar compaired to the front bar because I like my bow to balance even in my hand. My total weight sits right at 8 pounds on my indoor bow.
Try one combination for a couple of weeks, change things around and do it all over again intil you get a feel for what slows the float down for you.