Great minds think alike, sex and probably gas - however, one tip I would pass on, after the experience of the mater's clapped out 50 year old Aga, is to make sure your flue is cleaned (not least for insurance). In her case, she was going through a 900l load in about 2.5 months, then we (I) had the flue cleaned, probably for the first time in 20 years, and, as I leave tomorrow and have just read the meter, she has used less than a 1/3rd of a tank on the aga since early June, (ok no heating....but).
What came out of that metal chimney was unbelievable, the really dangerous stuff ré fires about 3 ft under the top....(and not far from where my bat cave is).