Newbie with 65 Long fleet..many questions.

[Mike65longbed]

Let me start by saying what a great community this is!

I have a 65LBFleet.. It has 255/70/15 all around and I like the size and wheels. I am going to do a disc brake conversion and stick with the 6 lug. My question is around dropping the truck a bit. How far can I go with this size tire. I don't know if I should go with a drop spindle or just the coils. Is there a performance difference on handling with drop spindles? My thought is to try and go 3" in the front and 4" in the back and keep a bit of rake. I have looked at all the pictures in the static drop thread, but not many long bed with tire size mentioned. Any advise would be appreciated.

Thanks Guys!