Small pistol for cc at university.

[Benjamin]

I am currently a student at a private university in Indiana, I won't disclose which one, that does not permit its students or faculty to possess a firearm or other "weapon" on campus or in a vehicle at any time. I currently have a full size HK USP but it is far too big to easily conceal. I'm looking for a good pistol that is very small and can be hidden almost anywhere in a dorm, vehicle, or on a person. I was thinking maybe .380 ACP but not sure. I need a good set up to both carry and hide the pistol. I want thoughts on:

1. What pistol
2. How to carry. (what type of holster etc...)
3. What ammunition is most effective for self defense in the small .380 ACP?
4. How to hide in a dorm or car or other place.

I kinda like the look of the Walther PPK, Sig 232, and I'm not opposed to a snubby revolver. I haven't fired a small pistol ever! My experience is with full size pistols and large frame revolvers.

Note: It is NOT illegal for me to carry on campus or possess a handgun! I have a lifetime LTCH! It is against university policy only, and I do not want to get kicked out. I am NOT trying to violate the law.

Also rooms and cars can be searched by the university pretty much at their will.