Crunching numbers for potential new TOAD

We currently have a 2023 FR Sunseeker 2400 MBS. The Mercedes chassis' tow capacity  comes in around 4200 #. Works fine with our 2011 CRV which weighs in around 3500#. We are looking at a new 2026 Jeep Wrangler 2 door with a curb weight of just over 4000#. This puts us near the max on the RV's tow capacity and that's not counting fuel/fluids and anything in the Jeep. On paper it works but I think we all know I'll be over the 4200 tow limit by the time it's hooked up to the bars. (I'm probably already slightly over when doing the math on GCWR vs GVWR) This is the first RV I've owned that I have been so close to the tow capacity. I do have brakes, breakaway etc. But I think in this case it's probably more about strain on the engine and drivetrain. The Jeep is really the only new vehicle available to flat tow that we really like. We don't plan on keeping this RV forever and have plans in the next year or so to move to a Renegade super C where we won't even be close on the numbers. 

So, should I be overly concerned with being so close and potentially over the tow capacity with the Jeep?  We usually stay pretty much to the East coast and our plans to head west with real mountains will start with the new RV when the time comes. Worst case, I can still tow our CRV (as long as it's still running)  and set the jeep up to tow later with the new RV. 

Appreciate your candid thoughts. 

- Jeff