No kit taste so I think they can be ready to drink earlier, if you like drinking them earlier. I'd still would let either hit 18 to 24 months before regularly sampling them.
Back on topic, I really like the WE SE International Brunello w/skins kit. Mine is about 24 months old, just bottled it, and it tastes better than any other red kit I've done that doesn't have back sweetening as part of the routine. Not that I love sweet reds, but added sweetener on a non-dry kit at the end seems to hide any minor flaws and lack of aging the kits have. My brunello is pretty dry, for the record (.992).