He looks nice Mike. I agree with making him a keeper.
It's a really good question about the Hot-tempered. I also think it's worth comparing this with Dirty.
- Hot-tempered - Is more likely to get a card when his team is behind.
- Dirty - Players dueling with this player have a higher chance to get cards. Player also gets more cards himself.
- Correct - Player commits fewer fouls and gets fewer yellow or red cards.
Without any evidence, apart from the description, it seems to me that Correct would indeed help to minimise the risk of conceding penalties. One gives more fouls (if losing) and the other gives fewer fouls.
In addition it's my experience from watching matches that keepers rarely attempt any tackles. Most pens are conceded by the defenders missing tackles, not the keeper. So although I would prefer Correct on a keeper it's not always essential.
So my opinion - for what it's worth - is to have him as a keeper but use your suggestion and train him Correct.