Also, if it's anything like 2011 then the longer a BRM validated ride you do in 2014 the earlier you get to pre-register. (Pre-registration wasn't required in 2011 as you could still get a place without an earlier ride, but it's always a good idea otherwise you might lose out.)
A 400km ride in 2014 isn't a bad idea (and you'll find out how much you like riding at night - unless you're irritatingly fast).
Yep, that's the minimum (and what I did in 2011).
Also, if it's anything like 2011 then the longer a BRM validated ride you do in 2014 the earlier you get to pre-register. (Pre-registration wasn't required in 2011 as you could still get a place without an earlier ride, but it's always a good idea otherwise you might lose out.)
A 400km ride in 2014 isn't a bad idea (and you'll find out how much you like riding at night - unless you're irritatingly fast).
I'm 50:50 about PBP2015 at the moment.