well you have many options, your riding mower is probably not one of them at least initially, but depending on your location or field / area conditions and terrains you ether could get (purchase or renting) “brush hog” / rotary cutter on the 3 point and mow it one or two days it could be done depending on the condition option two is getting one with a independent motor and tow it behind your quad … or you could spend a week with your husqvarna tractor cutting it at multiple height ….Sorry for the confusion.
The 4 acres is going to be mowable.
I'm looking for advice on how to mow it.
I have a tractor.
I have a Husqvarna riding mower with a 54" deck.
I have a quad I could tow something with.