Located in Jersey eh? That guy has tried to sell me that Laegers before... it wasn't worth what he wanted when I looked into it.
From the looks of it to me, I'd keep your bike. First off its your bike and I'm assuming you built it to be what you wanted. Second, if you got that Laeger it looks like you'd want to change it to be what you want... once again see previous statement.
Now if its a frame you are after, then there are more out there. You are in NJ correct? I know someone who has a bunch of R stuff and a Lonestar frame. I'm sure if you wanted an aftermarket frame you could get this one. But there is nothing wrong with a stock frame if it is in good shape and not all beat to hell. Many are still going strong, and will continue to do so if properly maintained and cared for. They are getting older, but you have to realize that most were trashed back in the day from racing. If you are not actively racing then honestly a stock frame will do for most. Also that Laegers frame may be cracked and in poor shape... you wouldn't know unless you stripped it, but they do crack and break too.
In all honesty, I feel you're better off keeping yours and if you're dead set on an aftermarket frame, then just keep an eye out and they pop up.