hand 2 is super standard, but i also like a smaller bet on the river for value.

hand 1 your saying that 3betting JJ in the BB vs a CO opener < calling with it OOP vs a CO opening range? Even vs a 15/12 i think 3betting is better here, especially if you have an active image. You also have to consider sample size for villains stats, but maybe you have plenty of hands on him.