IMO,
Those are overkill for a 60/90 size plane. I fly my 1/4 Giles for 3D with lesser servos. Futaba 9202s actually. The digitals are good for a pattern type plane and servo speed is essential for a good feel. You will have to watch your batteries when you run digitals at 6V. They really suck the batteries dry in a hurry. You might consider ganging two together for rudder to get both speed and lots of torque but you must get them matched and working together without any binding. If you already have the ones you listed I wouldn't hesitate to use them.
I've looked at these Widebody's and I talked to Planes Plus this morning and I'm going to wait till they get the 140 size out and use my OS 160 on it. It should be a great flyer.
Let us know how yo ulike your Widebody once you get it in the air. A review for this site would be cool too.
Later,,,basmntdweller