Not sure where you will be working but make sure you look in to the laws before you just go buy/put together a set up like mine there are states that will not allow you to pull doubles and there are other states that are longer then Michigan and some shorter then Michigan. One that comes to mind it Mississippi allows 99' total length but you can't leave Mississippi because no other state allows that length.
The length is from the farthest point forward of the tow rig (on my super duty it's the tow hooks) to the farthest point of the last trailer (could be your rig) it's not the back of the trailer. I got questioned about my boat because the outboard was over the 65' before the state changed the law.
Always missed, Never forgotten
08' 4door JK 5.7 hemi, auto and atlas
2012 F350 6.7 PSD CC shortbox