When is the next reward halving for this coin?
This coin has no reward halving. My guess is the next halving will be the rate though, they have those every quarter or so
Is there a total amount of coins that will be minted or 100 reward forever?
Total max coins 1,680 million, reward fixed @ 100/block.
Dev's tend to bend the rules as they please though, so nothing is written in stone.