Thanks DR!
I was very pleased with how my marathon (Dublin) went. Did it in 4:39 which I was happy with for a first attempt, although I'm sure I can get faster. I really wanted just to enjoy the experience as it was my first one, and I had a great time, can't wait to do more.
I would say for my spring marathon somewhere under 4:30 would be great - I don't really know what's a reasonable time to expect to be able to take off, and I guess it also depends on if the marathon's a fast or hilly course (at the moment trying to decide between Edinburgh and Vienna). Having said that I've read of people who have taken huge chunks off their times having spent a while BT'ing, and I will be entering my marathon training proper next year off of a higher weekly mileage (around 40 miles) and with a proper aerobic base, so who knows what's possible!