My rule of thumb has always been, if you can write a check any day of the week to replace a transmission, a/c compressor, engine, rv frig, rv a/c, landing gear, etc... then you probably don't need an ext warranty.
However, i did buy one on this, my 3rd rv. Its thru route 66 and was around $2000 for 7 years. $100 deductible unless you get work done at rt66 dealer, then its $34 deductible. I'd at least check other ext warranties before shelling out $4500. You came to the right place for info. Wise folks on here.
2013 Rockwood 8282WS
Reese Revolution Pin, Reese 16K
2008 Tundra Limited Double Cab 5.7L
Air Lift 5000 w/Wireless Air