I'm no vista expert but I've owned alotta kits.
Take the deal if the hardware is excellent to mint.
Swingstars AIN't Artstars.
Vistas are very collectable.
Here's a suggestion if you can float the bill.
Make the trade and get yourself a nice set of Keller shells. Transfer the hardware and play those.
Vistas don't sound all that great to me any way IMHO.
Store the vista shells(maybe get a pro to repair em in time.)