P2 Theme General Questions

Hi,

Have just installed P2 theme and looks great but just wondering if it’s also possible in performing the following functionality:

Q1) Apart from tags, can you also assign a category to a post?
Q2) Can you somehow use DISQUS as the comments system within P2?
Q3) I need to apply some type of sorting mechanism, i.e. most recent, most rated etc – is this possible, if so, how?
Q4) Are you able to add a “Rating” system, like “Facebook Likes” to posts in P2?
Q5) What is the best means of allowing users to sign-up to use the P2 theme to Post as well as comment on posts – is this possible?

Any help on the above, would be much appreciated.

Thanks.
Sp