Joanna, we only have 16.65 acres here but it is plenty for us. We have over 100 mature oak trees on the property that we are trying to keep the branches trimmed up on, and also picking up branches that blow out of them. Also, we mow about 2.5 or 3 acres of it around the house so that keeps us busy, and DH mows about 8 acres with the brush hog. The back part of the property is an open field that we have hay taken out of.
I couldn't handle a herd of cattle either, we have no facilities for that, but we could raise a few to butcher and eat. Nothing like home raised, grass fed, antibiotic-free beef!