Overall Length

I dont have an exact answer for you but I'm willing to bet with what your describing you'll be over your 80 feet.

 

Measure it?

 

My 285 inch tractor and 53 is 79.5 long.

 

With a 244" wheelbase x hood Pete, single axle jeep and a 51' lowboy with a 16" kingpin I'm an inch under 75' overall length.
So you should be under 80' doing the math. As long as you don't have a set back front axle with a bunch of extra nose hanging off the front anyway.
I forget the kingpin to axle spacing on the jeep. But it's 10'1" for the 3 axle jeep/drives group. My jeep fifth wheel is set 40" to the rear of the jeep pin. You might gain some length there depending how long the jeep is and how the geometry works out but you ought to be under 80'.

 

Wtf. I'm over 76 with just a regular 53 van trailer. With my plain jain 48 flat I'm over 71 feet.

 

Here is what I got.

 

You must have a looong tractor.

 

I had a looong tractor once, but Canada made me shorten my Peter...

 

I remember that, he’s got 23 feet sticking out in front of his trailer.