Hello, congrats! And welcome to the boards
As far as the clusterfeeds, offer as much as he'll take. There is no "set" amount of how much it should be, it's simply to "tank" him up.
The same goes for the dreamfeed, offer as much as he'll take. And again, there is no "set" amount for what it will take to get the baby to sleep through. All babies are different, and especially at his young age, two night wakings isn't uncommon. The dreamfeed sometimes takes a few days to get established....sounds like you guys are doing great!!!