I believe Grit meant that you already have your ideals about weight and not exceeding the sticker specs so you pretty much have to make up your mind on configuration based upon that.
I can tell you from personal experience I don't pack the same for every trip. Maybe you do but with your margin of error of only 110 lbs, I know I can fluctuate over 400-500 pounds easy depending on time of year, activity, ect. New ten ply tires down the road? They weigh more..add solar? Another battery, new TV....you see where this is going?
Point is if you are hung up on the sticker weight (not saying you shouldn't be) you might consider a truck with a higher capacity (I believe Ram offers 300-400 lbs more than Ford) or maybe a different TC. You list tongue weight on the boat but how much does it weigh? How big? A huge cuddy is a different beast than a aluminum sled...and that would impact my choice as well. If you want a diesel BUY ONE. You will always regret not doing so, so buy the right truck the first time. You don't see many diesel guys going back to gas rigs....
As for weight distribution...the few hundred pounds of diesel over a gas truck won't make a difference on the ramp. Do you have a truck now? Have you had issues before? I never have but I don't ice fish either but 4x4 and good tries....especially with a TC on it, no issue there.
