Going from MO to NY Yeshivish will be transition. If you put Torah first, you’ll do just fine. If you are bothered by “yeshivisha shprach” you’ll be continuously unhappy.
The yeshivish world of America carries a lot of weight on of the “yeshivisha” mindset. It’s there because it helps keep the standard flow. As someone who went through it, without being comfortable, I can tell you that I had no no issue with the sprach. I had my own struggles and was, and remain, deeply appreciative of the yeshivisha oilom who never ostracized me for my own shortcomings.
I always felt welcome and I always felt the push to self improve. Hopefully, you’ll feel the same.