Making champage/sparkling wine with still kits

I’m planning on making around a hundred bottles of sparkling wine for an upcoming wedding of a friend. There’s a Millennium sparkling wine kit, but I haven’t heard great things about it. Have any of you used a chardonnay or other non-champagne kit to make the champagne and been happy with it?

If you decide to use a regular kit, here’s a How To. I haven’t yet tried this myself. ... -wine-kits