but I don't know how desirable flying hour long missions to Lae are.
I did a mission of P-39's attacking Lae from 7mil airfield at Port Moresbey, seeing that it was about an hour flight to Lae I modeled this by planning a route that "seemed" like what they would do with the few images I found.
They take off from 7 Mile, fly SW to the gap in the mountain line and cross there North to the shore line and approach Lae from the SE. It works to about an hour trip, though you can just fly directly over the mountains with no problems too.
I like a good immersive full time mission, trying to model a full real account of a mission for a given aircraft, but I end up playing my "cutdown" versions more.
I try to fly the whole thing, but usually use the Auto Level, and sometimes the auto pilot with time x8, cut the hour down to 10mins to the area. I don't like time skip (black screen while the time accelerates), it doesn't seem to be very "fast".
With those features I don't think long full length missions are bad, though I wish we could skip to a way point. I usually end up making a version where I "cutdown" the full length mission to the point I would want to skip too.