I'd say these premium grain/silage trailers are way over engineered to just carry a bit of grain and silage so should handle any kind of farm muckaway work just fine.Bailey will do that if you ask, at extra cost obviously but maybe not as much more as you think. The only thing to be aware of is that dump trailers are designed to be strong without being silly heavy, if you start speccing a grain trailer with thicker floor and sides it could end up quite heavy. Might be worth looking for a dump trailer you could add greedy boards to for muck rather than a grain trailer you can only half fill when on heavy stuff. I guess it depends how much of each job it needs to do
If you're carting large rocks or lumps of concrete 50 weeks of the year, a specialist trailer would be better but I don't see the need for casual farm/contracting use.