Unless you are particularly picky about where your baggage goes then there is not going to be a storage issue in First. The only slight issue is that between the wardrobe and the shortage of overheads at the front of the aircraft then bags may have be slightly further away from you, but there's no shortage of space, and given the more hands on process with cabin crew in First, it makes no difference whether you are first or last on board. There is sufficient space.

I'm slightly mystified by the suggestion that CW is short on storage space. I've never, ever seen a problem there. In fact on longhaul generally it's nothing like the difficulties of shorthaul.