I'm not sure what you're trying to accomplish in either hand, especially hand 1.

Are you 3-betting the turn for value because you think you have the best hand or as a bluff hoping he folds? If it's the latter, you really need to re-evaluate the types of hands that LAGs fold before showdown.

If you're 3-betting for value, it's so thin that it makes zero sense. You can make the same amount of bets when ahead by calling down and you will never get outplayed. On top of that, you get to go for less when behind, which is much more often the case here. I realize you said you're going for only 3 bets either way, but keep in mind that by folding the current or potential winner, you're essentially going for more than 3 bets.