A velocity aerohead OC is far too light for loaded touring and it has very shallow braking surfaces.
EDIT: OK the OC side in the pics looks wide but the other side is very shallow beleive me. I'm considering using them as a lightweight road racing rim but I don't like its shallow braking surface so I will probably go with a Mavic rim. Anyway rims of the Aeroheads width are only used for tires up to 28c. Is that all you intend to use?
You can now get the Velocity Synergy OC is 700c and this rim looks ideal to me. Its light for a touring rim but still looks reasonably solid and it would work well with 32-35c tires.
See,
http://velocityusa.com/rim-diagrams.php EDIT: OK I should have looked at the drillings first as there only listed as 32 hole. You could always contact velocity through a dealer. Aparently they do special orders every now and then when they have enough to do.
Regards, Anthony