UCAS - no fun being a late applicant!

At the moment, I'm considering taking the university mentioned below up on their offer of a place (even though they're not London based etc).

Oddly - never having dealt with UCAS before - I found out today, that to move forward and even think about accepting I need to have definite answers from the other choices applied to. Not really a problem with two of my choices (one no and one unconditional yes). But, my last choice, the uni that sparked it all, that I'd been set on from the start hasn't yet said anything.

I know they're currently waiting to hear from people who applied on time, so until they know if they have any places left they can't say anything, so it's not a fault at their end. Thinking over the situation makes me wonder though. If someone who went for the uni I'm waiting on and was offered a place is waiting on another university to bung an answer their way then the whole system becomes like some convoluted bastardised housing chain!
Finding it quite hard to work out the benefits associated with this part of the system...

Despite that, I obviously have a choice to make. I think Plan A (university) is going to be the way to go, but I have now come to a bit of an impasse .

1. Kick the application for the university I really wanted to at least have an interview with and get things started with the offer I've just had.
2. Play a waiting game to see if I get the interview and then make a decision.
3. Say sod it all, call in my flying monkeys from their holiday in the Seychelles and make a concerted push to take over the world one country at a time.

Complications are a pain - just have to have a damn good think!
Written under the influence of Green Day - Basket Case - apt...