If you have taken everything in to account Ken then you just have to do it but only you can decide if you can sacrifice the home comforts that you take for granted. ( Always hated the chemical toilet myself.), love my big TV and my comfy bed.
Pay particular attention to the plans you make if one of you is not so well, not being negative but nothing worse that being ill and a long way from home.
House keeper? sorted at home, if you decide to rent out, and why not? then you have to be prepared to not come home early.
If you are happy you have covered all aspects I think it would be a superb adventure, why not book tickets for shows and events around the country well in advance at best rates, best seats ( Edinburgh Festival etc). nice to be able to look forward to a show before you arrive all prebooked.
You could always book the odd night in a luxury hotel as a treat as well
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Dave...
Lost a few stones  and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident
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