Before proceeding, I’d ask for three address-specific numbers: an insurance quote, the expected property-tax bill after purchase, and a management proposal listing every extra charge. Then verify what the tenant is responsible for maintaining at this particular country home; grounds or other...
Be careful with completed sales as a supposedly clean answer. The closing price is useful, but the relevant comparison starts when that home was listed and negotiated. Match its original condition, location and listing period to your active sample. Otherwise a completed sale can look current...