Rare Spares are fine, as long as the rubber is 'fresh'. My sedan had daylight showing between the rubber and the body when I bought it. Got a rare spares rubber for the rear screen, and all our problems were solved.
If you aren't in a hurry, I reckon rubbers are the biggest bargain amongst restorers because everyone buys them early in the resto, loses interest, and they end up at swap meets for 20 percent of new price! (edit: Or am I stuck in a pre-ebay world?)
Go for the laminated screen if you can. Just check first, the one in the car may already be laminated.
All the best, Shayne.