I think the server's down as of now. I'm at mission 04 too, and just about to attempt it now. I spent too much time playing territorial missions yesterday. 
Anyway, for inputs, maybe later. I just woke up and noticed that if you play offline, your team reverts to your SP-created one as opposed to retaining that team you joined in MP. At least I bought most of the parts; I'll have to wait for online again to take advantage of the items at the shop.
Edit: I'll just keep adding info on this post while no one has posted yet. Which will be inside the spoiler box.

Anyway, for inputs, maybe later. I just woke up and noticed that if you play offline, your team reverts to your SP-created one as opposed to retaining that team you joined in MP. At least I bought most of the parts; I'll have to wait for online again to take advantage of the items at the shop.

Edit: I'll just keep adding info on this post while no one has posted yet. Which will be inside the spoiler box.