Correct, there is no aft storage locker space. The starboard mid locker ( behind the helm) store a lot if you don't need it for fish. Same for the port mid locker. I use the livewell so that locker stays empty but I stash mu second anchor, spare lines and other small items in the starboard mid locker. For storage that you don't need frequent access to, the three lockers under the cabin's cushions are decent. I stow extra vests, clothes, lines, extra flares etc. Just note that the forward most locker may get damp. The port and starboard are drier but can get moisture from the bilge.
As to the seats, there aren't many options to the spacing. You could for seats without arm rests but the arms are some comfort. There is very little room between the seat base and the side of the helm so moving the seat pedestals even if possible won't help.
The hull is what it is, it's a small boat.