Shrike,
just some thoughts:
your accommodation this year may be pet friendly, but the majority of private rented accommodation (for year 2 and yr3) is not. Sometimes it can be hard enough finding a nice digs, let alone a nice one which will allow pets to stay. Also what might your potential flatmates think?
Also were will the piggies go during holidays - many halls or residence will ask you to move all your stuff out each term, so they can rent out the rooms for conferences?
Also try and think of it from the piggies's point of view - having marauding drunk big people (your mates, not you ) and loud music 24h a day from flats above and below you, may not be the nicest life for a piggie.
you might be able to offer some piggies a much better lifestyle in a few years time
University is such a changing and dynamic part of your life. I would strongly suggest getting to university first, and settling in for a term or 2, before deciding about piggies.
Whatever you decide, i hope you are happy. and if you are awaiting results next month - good luck
Becca
DOI - i was a student for 5 years