I'm building the whole suit. I've been planning halo-ween for a while now.
In progress:
helmet, of course. You've seen the status of that project.
Shoulders - Those will be next, seeing as they are symmetrical on both sides and are fairly easy to sculpt. I'm about 1/2 done with the clay sculpt on this.
Chest piece is probably going to be last. It's going to take the most amount of clay.
The feet are 1/2 done clay sculpts. I'm not really sure what direction I'm going to go with those. It's still in the experimental stages at the moment.
All in all, I have several pieces going at one time. They should all be done and ready to rock by october