Don't worry about the cleanup afterwards Sue, we'll manage it.
It's interesting to hear views on the picture storage here as opposed to say W/f.com - the limits here are set so that the server performance isn't compromised by manipulating them (that's a memory hungry process) and so that we have the space to store as many as possible.
We could make the size limits bigger but in doing so we risk the board falling over more often, as used to happen before we migrated to this set up (as many of the longer-standing members will, no doubt recall.)
We do keep it under review though, especially as the board is busier than it's ever been now.