The first lot of 20 huge boxes didn't go quite to plan (listed somewhere above) so I went and got another 40 boxes and got much better results this time.
10000 Doubloons, 180 days of premium time, Okt Revolutsiya, Mutsu, Warspite, Anshan, Huanghe, De Grasse, Scharnhorst and a Belfast (very chuffed with this one) all with their 10 point captains and camos respectively. With the last few remaining boxes many more special flags and a few boxes of fir tree camo.
I probably spent a little too much (what the hell, it's only money) but all in all I'm very happy with the return that I got, especially the Belfast because it got removed on the day I returned to WOWS and I really wanted that ship.