I'm flying from SVO on Jan. 1, can I take the train?

I have taken the metro to Rechnoy Vokzal as well (or it may have been that other station) and a bus for RR 16 about two years ago. I was in a group of four so the savings per person wasn't spectacular but we were very proud to beat the taxi mafia!
I was seriously worried about missing my flight though.
For reasons beyond my control, I always try to have my visa issued for an extra few days to buffer.
Think I will try it again.