Don't want to pour cold water over your idea, but research indicates that people are very bad at imagining themselves in 15 years. Will you have access to good services within walking distance; is there a good hospital with a good bus service; will you be able to pursue your hobbies and interests where you plan to live; what if one of you needed care services? If you have those bases covered, then go for it, but think very carefully. We moved to an old farmhouse in a village near a particularly beautiful bay, then it became obvious that my husband had early-onset dementia (57). Oh, and he also got cancer. Actually, we were only a few miles from a good hospital, but it might as well have been on the moon if we'd had to rely on public transport! We had to move back to the city, but not until he'd finished his chemo, and it was an absolute nightmare moving with a husband with dementia. I loved our farmhouse by the sea, but I realise that it was a risky move, and I wouldn't do it again. Why don't you rent in Dorset?