I've done 100 miles now on mine, all seems fine (except the brakes now work better...and squeak, need to take it back for its check up)
TBH I have no idea about bottom brackets, so it's not something I'd consider. When I had the Genesis built, I did buy a rather costly Hope one in gunmetal to match the rest of the colour scheme
Has the price come down to £470 now? As you won't get the BC discount AND accessories unfortunately (I see it's £520)