Congratz on ur long waited Kaiser...
Nah, O2 more like 'false' rush ship, it has low angle(30), fast speed, but not the size, I believe it has the biggest size among BB3(showed by HP).
Seeing ur play style practicing in O2, it will make u play Kaiser more agressive...
I too played since 08-09, retired in 2010 and play again july 2012. But I feel that longer OH time doesn't quite help me much in Bizzy with 5 engy+12. I use different 'way' to dodge salvo or chassing subs.
And yes I have 2 BB BOs, so I played simultanously between O2 and Bizzy.