If I were really limited to one, I'd have not only guns to sell, but then it would be silly to keep the compressor and scba tank, and that pellet selection would have to get trimmed, ALL those scopes in the cabinet, oh then the pellcans and a bunch of other stuff as I look around the hobby room.
At this point, I've taken this to far to even keep the hobby if had to be just one. Don't get me wrong, I'd keep the LP2 and make a carbine stock for it wear occasionally (multipurpose, and year round fun). But even then, I'd either get really good with it or let the hobby fad away as I got involved in something else.
It will happen one day, but not this week!