Not sure which to choose: 3/4 3/5 or 4/5

[chevymotocross]

Got an 87 r10 pickup. 5 leaf spring rear. Most I haul, would be either 2 dirt bikes in the bed, or, pulling a 5x8 trailer with bikes and gear. After lowering, I would want the truck to continue doing those duties.

I don't mind c-notching, it doesn't look too hard using a rotary air cutter, or possibly a sawzall. I also don't mind notching the bed support if I were to go with the 3/4 shackle hanger setup. I am looking for either a level stance, or a slight front rake (somewhat like factory). I also want the truck to corner pretty well, and plan on adding a front stabilizer bar as well (not equipped from factory).

If I were to go 3/4, seems like most of my factory ride quality will stay the same. Shackles and hangers seem a bit more involved than a flip kit though, and if I ever wanted to go lower, I really can't with a shackle/hanger. I could with the flip.

If I do the flip kit, I may have problems with my tailpipes hitting the rear axle, so I'd have to dump the exhaust if I do it. I want to make sure the front goes with it. What I mean is, DJM sells an inexpensive 3/5 kit, but will this cause the truck to have that "boat stance" which I certainly don't want? Should I add a 1'' lowering spring to make it a 4/5 or will this not be needed?

As for the wheels, I will be running 15'' alloys, and I am aware of the issues I may have with the 3'' spindle, I hear grinding is minimal. I don't want big gaps between tire and fender, but I also don't want any rubbing. If I go 3/4, I am running 255/70/15 all around, like slonaker's truck, or stagger it with 225/70 front and 255/70 rear. If I go 3/5 or 4/5, I plan on running either 255/60/15 all around, or 255/60 up front and 275/60 rear, not sure yet. What would you guys recommend, staggered or not?. Also, will the 255/60/15 rub on a 4'' front drop?