Birthday was lovely, thanks!
Good to hear you're going with DCC, only way forward IMHO....
What I said about keeping the track and loco wheels spotless is even more important with DCC as even a momentary breaking in signal will cause locos to stop dead. For DCC you should consider modifying the points as insulfrog are "power routing" and only supply current to the direction they are set. DCC needs the entire layout to be live at all times.
It's a simply job to modify the points, only takes a couple of minutes and a little soldering. Steer clear of the little clips which Hornby sell to do the same job, they can cause problems.
Here is an excellent source of info for wiring DCC (and DC) layouts - http://www.brian-lambert.co.uk/index.html