Early A-Body Convertible Top Replacement

Our '64 Dart's soft top has a couple of small rips and one larger one (about 6") and I think they need to be addressed soon. I've never done a convertible top replacement, so I'm interested in thoughts on doing one of these. What are some best practices and good things to know before diving into a top replacement? Any product or vendor recommendations?

Warm weather or well heated workspace... you don't want to fight it any more than it's necessary.