Man, you are good to go!
(1). The traj. difference is a non-issue here, you say that 200 yards will be the max. range, so the trajectory is plenty flat, in fact with a 200 yard zero & 2,600fps muzzel vel. (easy to get), you will be only 2.2" high at 100 yards. Even if you need to shoot 300 yards, the bullet is 9" low, easy to allow for.
(2). Expansion is good at the yardages you are shooting, if fact the bullet would expand a little at 400 yards, double the range you are shooting.
(3) Your penetration will be great at any angle, better than a 150 except for the TSX.
Since your rifle likes them, I see no downside at all. Recoil is a little more, if it is not bothering you, who cares!