What's the weight law like down there? In my state, I don't think you could scale that setup without permits.
Figure 22,000 for the truck, 14,000 for a tridem trailer. So you're already over 80,000 right there. But most of those pintle trailers are too short to scale 80,000 even with 3 axles. You also have trouble getting enough weight on the truck tandems.
Most guys here will try to stay under 30,000 lbs on the machine to pull with a tandem.
Mine works out at 20,000 for the truck 15,500 trailer and 50,000 for the hoe. Allowed 53,000 on trailer axles, 12,500 goes on the truck. My trailer is 34' long, I can put all the weight on the truck I want, the hoe is probably 6' back from the front of the trailer with how I load it now.
Pretty common here to see guys pulling 200's behind dump trucks, i'd guess there is probably 10 other companies here i've seen doing it. So much more cost effective then a tractor and lowboy, and simple for short city moves.
Was talking to another guy last week with a 240, has a dump truck but has to pay someone to move hoe. Can't even bid on so many jobs because he cannot compete due to moving expense. Do some out of town jobs (maybe 20-30 mins out), by the time he would pay for moving 2 times there's no money in the job, can't be paying $1500-1800 to move a hoe on a $4500-5000 job. But for guys like me who move it myself, in one day come with machine dig, then back next day finish and bring hoe back there's good coin in it.