Write it all down, even the knick-knacks and supplies. That does two things: it accounts for more things they've insured and it shows that you are keeping track and are unlikely to be steamrolled.
On the stuff like furnace, electrical, etc., call an appropriate contractor and get estimated costs for replacement. The faster you get on that the closer to the front of the line you are
Don't forget installation costs on appliances, etc., too.
The insurance adjusters are going to be looking for items to cut -- better to wrangle over installation costs, especially if you can do it yourself if necessary, than over actual items.
On the stuff like furnace, electrical, etc., call an appropriate contractor and get estimated costs for replacement. The faster you get on that the closer to the front of the line you are
Don't forget installation costs on appliances, etc., too.
The insurance adjusters are going to be looking for items to cut -- better to wrangle over installation costs, especially if you can do it yourself if necessary, than over actual items.