get a sense of the scale we're talking about? i.e. the one we're looking at is rated F (27) and our current home is B (81)
Well for a start off that's a great indicator of the level of comfort and efficiency you're used to against what you could anticipate. On the upside I guess it means there are lots of measures you can take.
When you say you could throw money at it do you mean to improve the rating or do you mean on an ongoing basis? and importantly, is the property listed at all or in a conservation area where there are restrictions?
What kind of life do you like in your house? do you move around a lot or like to lounge on the sofa in the evening? do you embrace the thought of wearing three layers, thick socks and sheepskin slippers indoors, or are you more usually found in a tee shirt and bare legs?
It's ok snuggling up by a log burner and feeling toasty warm, but what about when you open the door to the hall and enter an artic chill, or when you get out of bed, the bath or shower and it's just not comfortable?
We have a range cooker that's on even during all but the highest heatwave, a log burner, sash windows with lined and interlined heavy curtains and blinds, lots of loft insulation and draught proofing doors including those fabric stuffed sausages up against them, but we still have to introduce an awful lot of heat.
I always think about who a house was built for as well. Farming people generally don't have time to sit around, they like the fresh air and are used to the elements. That's what you're starting with.
You do sound smitten though.