i'd say keep it. weather your thinning out your collection or not that custom speeder will always be somthing you made and that makes it worth more than a normal speeder. i don't know how elobarate it is, but either way you put your time and hard work in to it. but as chewie said your right to do with it whatever you want, but at very least, trade or sell it so that you can get somthing, that your interest do lie in at the moment, fo it.