I have started today with the 1.st widebody jet but I think you can't use this ac on short routeswithin Europe. With luck I get 2 roundtrips to spanish airports from my homebase DUS. The main reason is the turn arround time of minimum 110 minutes. To have a turnaround without the risk of delay, you have to use a turnaroundtime of 180 minutes. A 707 or DC 8 have a turnaround of just 55 Minutes which I think ist too short.
I think. i will return the leased AC as soon I get the A300 airbus.
This matter was just today discussed on Beta forums (https://www.airwaysim.com/forum/index.php/topic,2857.0.html).