Man, hotels in New York are expensive. Can't say I've ever thought that I'd ever pay what it looks like I'm going to have to pay (~ $250 - $300 per night) for a hotel room. Think my maximum before would have been around £70!
I'm also having to consider the flight details for the trip - I'd like to spend a few days in New York (never been), so figure it'd be better to do spend a few days before the marathon sight-seeing and the like. However, time and budget is constrained and I doubt I'd want to be jumping on a plan early the following morning (Monday) to be back at work on Tuesday. That said, I don't want to be hobbling around New York, feeling sorry for myself and not being able to do \ see stuff!
Another stumbling block I've had is that I don't quite have as much holidays left for this year as I thought I had. I've currently got 10 days to play with, but that's also got to cover Christmas, Gael Force (which I'd planned on taking 6-7 days to spend some time at home) and a wedding in Spain! I think it's all do-able within the 10 days but will require some juggling and changing of already booked flights (I actually had to change the GF ones anyways).
Madness Ted, madness!