Hey, tinyrice. Don't know what these 'International widebodies' and 'man-sized aeroplanes are' but there are plenty of freighters which fit the bill on both counts. Lots of freighting 747's and Tens around.
Once you get used to the sleep pattern the life is great. Food is great too mainly because in our outfit we buy it ourselves - we have to cook it ourselves too but you soon get to know who is checked out on oven operations