i own a glass shop in az and yes get away from the chrome moldings if you want to get rid of rust they are a rust magnet
fw471 my cost 72.00
pck471-84 (clip kit to fasten your moldings) 14.04
fw623 my cost 50.76
wbl 623 gasket for rubber set 35.19
i would suggest calling around for prices and with the following you could figure out a good deal and yes i would change over to a gasket. i would also recommend when you get this done take out the glass yourself (beat it out with a bat if you have to) that way you can inspect the pinchweld to see if you have rust and then repair it before the new glass goes in hope this helps