Husqvarna is a step down from a Deere but will do it OK. Your bucks but a Zero turn will save a bunch in the long run. Take a look at the tractor mowers and they really don't have a frame just a box rail housing. Second is the decks as they will wear out and the bearings are always the thing to watch.

Bought one husky and it was OK the Kohler engine 54 in will cost you about 2300, the brigs engine model is 300 less. They hold up OK but not as tough as a Deere but probably would fit you better.