We have a boat nearly that large and beyond length related costs, the big downside is that it is often too big for many anchorages. Add the height above the water of the anchor roller to the depth of water for scope plus the LOA of the boat and you can get quite a big swinging circle.
If you can afford it there is not much downside to a big boat: they ride easily at anchor in conditions that have smaller boats bouncing about, maintenance is actually easier since components are not buried away, tank capacity is greater allowing more independence from marinas, etc.