You may consider doing a gun raid. The Hawk slings a 105, ammo and gun crew. They drop the equipment and crew. The gun crew does a fire mission and the Hawk comes back and picks them up. Gino can shed much more light on the subject but I remember doing this up near Bragg years ago and having lots of fun doing it.
As far as load capabilities in general are concerned, the cargo hook on a L can carry 9k lbs. Stateside, a L has about a 7k useful load capacity. A standard HMMWV is no problem at all but not an up armored or TOW.
BTW Gino, I am very interested in how that MedEvac set works out. Maybe they will do an HH-60M interior before too long as well.